A130221 - cp's OEIS frontend

A130221 Number of partitions of n-set in which number of blocks of size 2k is odd (or zero) for every k.

n	a(n)
0	1
1	1
2	2
3	5
4	12
5	37
6	158
7	667
8	2740
9	13461
10	74710
11	412095
12	2406880
13	15450541
14	103187698
15	715323395
16	5236160612
17	40014337437
18	318488475658
19	2637143123027
20	22603231117364
21	201268520010153
22	1855401760331982
23	17624602999352535
24	173071602624629536

[1, 1, 2, 5, 12, 37, 158, 667, 2740, 13461, 74710, 412095, 2406880, 15450541, 103187698, 715323395, 5236160612, 40014337437, 318488475658, 2637143123027, 22603231117364, 201268520010153, 1855401760331982, 17624602999352535, 173071602624629536]

cp's OEIS Frontend

A130221 Number of partitions of n-set in which number of blocks of size 2k is odd (or zero) for every k.

Table of values

List of values