A305780 Number of set partitions of [n] with alternating parity of elements and exactly six blocks.

1, 6, 27, 108, 409, 1558, 5692, 21328, 76468, 282885, 999383, 3656887, 12772925, 46306978, 160408850, 577077226, 1987559778, 7105490315, 24379316121, 86719101209, 296819500851, 1051663900480, 3594472289644, 12696988924724, 43364647235536, 152825304753761

Offset: 6

Author

Alois P. Heinz, Jun 10 2018

Keywords

• nonn

Links

• Wikipedia, Partition of a set

Crossrefs

Column k=6 of A274581.