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A287258
Number of set partitions of [n] such that all absolute differences between least elements of consecutive blocks are <= eight.
4
1, 1, 2, 5, 15, 52, 203, 877, 4140, 21147, 115974, 678310, 4205230, 27497463, 188884702, 1358500111, 10201272170, 79783911418, 648489059992, 5467348769587, 47728811273817, 430751210469094, 4013169321694153, 38547034091725550, 381252702363363969
OFFSET
0,3
LINKS
FORMULA
a(n) = A287216(n,8).
a(n) = A000110(n) for n <= 9.
CROSSREFS
Column k=8 of A287216.
Cf. A000110.
Sequence in context: A276725 A287587 A287280 * A287670 A164863 A192126
KEYWORD
nonn
AUTHOR
Alois P. Heinz, May 22 2017
STATUS
approved