A305781 Number of set partitions of [n] with alternating parity of elements and exactly seven blocks.

1, 7, 37, 169, 763, 3287, 14402, 60752, 261772, 1085823, 4614736, 18868613, 79286687, 320425251, 1333901662, 5341972670, 22066221462, 87764483463, 360206083844, 1425407602339, 5819322422329, 22944438320083, 93269292846714, 366809712490908, 1485913213777040

Offset: 7

Author

Alois P. Heinz, Jun 10 2018

Keywords

• nonn

Links

• Wikipedia, Partition of a set

Crossrefs

Column k=7 of A274581.