Search: keyword:right-listable
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Displaying 1-10 of 15 results found.
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BP386 |
| Lower shape can be used as a tile to build the upper one vs. not so. |
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CROSSREFS
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Adjacent-numbered pages:
BP381 BP382 BP383 BP384 BP385  *  BP387 BP388 BP389 BP390 BP391
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KEYWORD
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nice, precise, allsorted, left-narrow, perfect, pixelperfect, orderedpair, traditional, preciseworld, left-listable, right-listable
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CONCEPT
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tiling (info | search)
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AUTHOR
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Jago Collins
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BP394 |
| For each colored square only, there exists a path starting on it that covers each square of the figure exactly once vs. there is no path that starts on a colored square and covers each square of the figure exactly once. |
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BP904 |
| Rows show all possible ways a certain number of dots can be divided between a certain number of bins vs. not so. |
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BP926 |
| Numbers of dots in ascending order from left to right vs. numbers of dots neither in ascending nor descending order from left to right. |
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BP931 |
| Some number labels its own position in the sequence from left to right vs. not so. |
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BP956 |
| Nested pairs of brackets vs. other arrangement of brackets (some open brackets are not closed or there are extra closing brackets). |
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COMMENTS
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Examples on the left are also known as "Dyck words". |
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REFERENCE
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https://en.wikipedia.org/wiki/Dyck_language |
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CROSSREFS
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Adjacent-numbered pages:
BP951 BP952 BP953 BP954 BP955  *  BP957 BP958 BP959 BP960 BP961
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KEYWORD
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easy, nice, precise, allsorted, unwordable, notso, sequence, traditional, inductivedefinition, preciseworld, left-listable, right-listable
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CONCEPT
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recursion (info | search)
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AUTHOR
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Aaron David Fairbanks
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BP997 |
| There exists a loop that passes through every white square once without passing through the black square vs. there exists no such loop. |
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BP1057 |
| Filled subsection divides the grid vs. not so |
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BP1072 |
| Filled subsection is largest square that divides the grid vs. not so |
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BP1148 |
| Number of dots in the Nth box (from the left) is how many times the number (N - 1) appears in the whole diagram vs. not so. |
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COMMENTS
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Left-sorted examples are sometimes called self-descriptive sequences. |
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CROSSREFS
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See BP1147 for a similar idea.
BP1149 was inspired by this.
Adjacent-numbered pages:
BP1143 BP1144 BP1145 BP1146 BP1147  *  BP1149 BP1150 BP1151 BP1152 BP1153
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KEYWORD
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nice, precise, unwordable, notso, handed, leftright, left-narrow, sequence, preciseworld, left-listable, right-listable
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CONCEPT
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self-reference (info | search)
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AUTHOR
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Leo Crabbe
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