The rows in the panels on the right hand side show all the ways you can divide a certain number of dots between a certain number of bins, ignoring which bins they are placed in.
Adjacent-numbered pages: BP899 BP900 BP901 BP902 BP903  *  BP905 BP906 BP907 BP908 BP909
solved, left-null, grid, left-listable, right-listable
Molly C Klenzak