A130219 - cp's OEIS frontend

A130219 Number of partitions of 2n-set in which number of blocks of size k is even (or zero) for every k.

n	a(n)
0	1
1	1
2	4
3	56
4	631
5	15457
6	582374
7	18589286
8	894499204
9	51154344582
10	3823359163826
11	274722100927166
12	25458967562911128
13	2569179797929092506
14	284554990016509385086
15	37830153187190688287522
16	5093072752898942262610007
17	798814778335473578083666573

[1, 1, 4, 56, 631, 15457, 582374, 18589286, 894499204, 51154344582, 3823359163826, 274722100927166, 25458967562911128, 2569179797929092506, 284554990016509385086, 37830153187190688287522, 5093072752898942262610007, 798814778335473578083666573]

cp's OEIS Frontend

A130219 Number of partitions of 2n-set in which number of blocks of size k is even (or zero) for every k.

Table of values

List of values