A287260 Number of set partitions of [n] such that all absolute differences between least elements of consecutive blocks are <= ten.

1, 1, 2, 5, 15, 52, 203, 877, 4140, 21147, 115975, 678570, 4213596, 27643409, 190833091, 1381223515, 10448641031, 82388624090, 675565642030, 5748668560311, 50672729373781, 461933478903121, 4348527928700455, 42216300909368230, 422143264687282845

Offset

0,3

Links

Alois P. Heinz, Table of n, a(n) for n = 0..579

Wikipedia, Partition of a set

Formula

a(n) = A287216(n,10).

a(n) = A000110(n) for n <= 11.

Crossrefs

Column k=10 of A287216.

Cf. A000110.

Sequence in context: A229227 A287589 A287282 * A287672 A203641 A192127

Adjacent sequences: A287257 A287258 A287259 * A287261 A287262 A287263

Keyword

nonn

Author

Alois P. Heinz, May 22 2017

Status

approved