A360808 - cp's OEIS frontend

A360808 Number of double cosets of the Sylow 2-subgroup of the symmetric group S_n.

n	a(n)
1	1
2	1
3	2
4	2
5	4
6	8
7	35
8	16
9	51
10	145
11	1112
12	1145
13	10929
14	41400
15	542785
16	40384
17	583169
18	2781808
19	48558706
20	65461347
21	1277941540
22	7370563251
23	159694747220
24	63387056365
25	1500631724572
26	10152855622657

[1, 1, 2, 2, 4, 8, 35, 16, 51, 145, 1112, 1145, 10929, 41400, 542785, 40384, 583169, 2781808, 48558706, 65461347, 1277941540, 7370563251, 159694747220, 63387056365, 1500631724572, 10152855622657]

cp's OEIS Frontend

A360808 Number of double cosets of the Sylow 2-subgroup of the symmetric group S_n.

Table of values

List of values