A358112 - cp's OEIS frontend

A358112 Table read by rows. A statistic of permutations of the multiset {1,1,2,2,...,n,n}.

n	a(n)
1	1
2	5
3	1
4	47
5	42
6	1
7	641
8	1659
9	219
10	1
11	11389
12	72572
13	28470
14	968
15	1
16	248749
17	3610485
18	3263402
19	357746
20	4017
21	1
22	6439075
23	204023334
24	371188155
25	95559940
26	3853617
27	16278
28	1
29	192621953
30	12989570167
31	43844432805
32	22448025251
33	2216662051
34	38270373
35	65399
36	1

[1, 5, 1, 47, 42, 1, 641, 1659, 219, 1, 11389, 72572, 28470, 968, 1, 248749, 3610485, 3263402, 357746, 4017, 1, 6439075, 204023334, 371188155, 95559940, 3853617, 16278, 1, 192621953, 12989570167, 43844432805, 22448025251, 2216662051, 38270373, 65399, 1]

cp's OEIS Frontend

A358112 Table read by rows. A statistic of permutations of the multiset {1,1,2,2,...,n,n}.

Table of values

List of values