See BP1041 for right finite vs. right infinite. That is this Problem with with sides flipped and sides of mini-Problems flipped.
See BP515 (left-finite) for a version that sorts links to Bongard Problems and not just about numbers, instead of images of Bongard Problems (miniproblems) about numbers.
Adjacent-numbered pages:
BP1027 BP1028 BP1029 BP1030 BP1031  *  BP1033 BP1034 BP1035 BP1036 BP1037
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