A305782 Number of set partitions of [n] with alternating parity of elements and exactly eight blocks.

1, 8, 48, 254, 1284, 6456, 31559, 155828, 747046, 3633393, 17131855, 82235382, 382314833, 1814891650, 8339187411, 39220306016, 178502457056, 832998001071, 3762499165935, 17443657250690, 78322897989851, 361141330169264, 1614162421290491, 7409032399939348

Offset

8,2

Links

Table of n, a(n) for n=8..31.

Wikipedia, Partition of a set

Crossrefs

Column k=8 of A274581.

Sequence in context: A079763 A079785 A225977 * A292536 A242668 A002697

Adjacent sequences: A305779 A305780 A305781 * A305783 A305784 A305785

Keyword

nonn

Author

Alois P. Heinz, Jun 10 2018

Status

approved