A130220 - cp's OEIS frontend

A130220 Number of partitions of n-set in which number of blocks of size k is odd (or zero) for every k.

n	a(n)
0	1
1	1
2	1
3	5
4	5
5	27
6	117
7	331
8	1213
9	6579
10	47193
11	140527
12	1213841
13	4617927
14	48210879
15	243443739
16	2392565149
17	10377087115
18	125434781845
19	725455816883
20	8086277450629
21	59694530600595
22	614469256831895
23	4650128350629285
24	52385811781286769
25	467607504075929863

[1, 1, 1, 5, 5, 27, 117, 331, 1213, 6579, 47193, 140527, 1213841, 4617927, 48210879, 243443739, 2392565149, 10377087115, 125434781845, 725455816883, 8086277450629, 59694530600595, 614469256831895, 4650128350629285, 52385811781286769, 467607504075929863]

cp's OEIS Frontend

A130220 Number of partitions of n-set in which number of blocks of size k is odd (or zero) for every k.

Table of values

List of values