A270960 Number of set partitions of [n] having exactly six pairs (m,m+1) such that m+1 is in some block b and m is in block b+1.

1, 76, 1650, 23031, 264716, 2788215, 28315287, 284453798, 2865664275, 29172005637, 301410662549, 3169264274716, 33967946651067, 371460612845541, 4146934516914449, 47274580420037008, 550357684288267873, 6542615612312034842, 79410538735157560508

Offset: 10

Author

Alois P. Heinz, Mar 26 2016

Keywords

• nonn

Examples

			a(10) = 1: 136(10)|259|48|7.
		

Links

• Alois P. Heinz, Table of n, a(n) for n = 10..220
• Wikipedia, Partition of a set

Crossrefs

Column k=6 of A270953.