A287585 - OEIS

A287585

Number of set partitions of [n] such that all absolute differences between least elements of consecutive blocks and between consecutive elements within the blocks are not larger than six.

1, 1, 2, 5, 15, 52, 203, 877, 3936, 18095, 84280, 394852, 1852811, 8691683, 40761476, 190968022, 893534860, 4175717815, 19494813589, 90945241124, 424026717957, 1976119285318, 9206350189686, 42880144574315, 199687348862859, 929807546551337, 4329119748507622