A356114 - cp's OEIS frontend

A356114 Number of irreducible permutations of n with partition type [2, 1, 1, ..., 1] (with '1' taken n - 2 times).

n	a(n)
0	0
1	0
2	0
3	2
4	9
5	24
6	55
7	118
8	245
9	500
10	1011
11	2034
12	4081
13	8176
14	16367
15	32750
16	65517
17	131052
18	262123
19	524266
20	1048553
21	2097128
22	4194279
23	8388582
24	16777189
25	33554404
26	67108835
27	134217698
28	268435425
29	536870880
30	1073741791
31	2147483614
32	4294967261
33	8589934556
34	17179869147

[0, 0, 0, 2, 9, 24, 55, 118, 245, 500, 1011, 2034, 4081, 8176, 16367, 32750, 65517, 131052, 262123, 524266, 1048553, 2097128, 4194279, 8388582, 16777189, 33554404, 67108835, 134217698, 268435425, 536870880, 1073741791, 2147483614, 4294967261, 8589934556, 17179869147]

cp's OEIS Frontend

A356114 Number of irreducible permutations of n with partition type [2, 1, 1, ..., 1] (with '1' taken n - 2 times).

Table of values

List of values