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A305779 Number of set partitions of [n] with alternating parity of elements and exactly five blocks. 1
1, 5, 19, 62, 204, 627, 2006, 6045, 19091, 56804, 177431, 523072, 1618006, 4739853, 14544372, 42440871, 129419597, 376877914, 1143885829, 3328765378, 10068808024, 29308488795, 88433869354, 257651383313, 776063514999, 2264100874960, 6811218232163, 19903182431380 (list; graph; refs; listen; history; text; internal format)
OFFSET

5,2

LINKS

Table of n, a(n) for n=5..32.

Wikipedia, Partition of a set

CROSSREFS

Column k=5 of A274581.

Sequence in context: A173627 A295288 A141397 * A143131 A036677 A003296

Adjacent sequences:  A305776 A305777 A305778 * A305780 A305781 A305782

KEYWORD

nonn

AUTHOR

Alois P. Heinz, Jun 10 2018

STATUS

approved

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Last modified June 19 04:44 EDT 2019. Contains 324217 sequences. (Running on oeis4.)