A346624 - cp's OEIS frontend

A346624 Irregular triangle read by rows: T(n,k) is the number of distinct Wilf classes of subsets of exactly k patterns in S_n, for 0 <= k <= n!.

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	1
6	1
7	1
8	3
9	3
10	3
11	2
12	1
13	1
14	3
15	38
16	242
17	1100
18	3441
19	8438
20	15392
21	19002
22	16293
23	10624
24	5857
25	3044
26	1546
27	786
28	393
29	198
30	105
31	55
32	28
33	14
34	8
35	4
36	2
37	1

[1, 1, 1, 1, 1, 1, 1, 1, 3, 3, 3, 2, 1, 1, 3, 38, 242, 1100, 3441, 8438, 15392, 19002, 16293, 10624, 5857, 3044, 1546, 786, 393, 198, 105, 55, 28, 14, 8, 4, 2, 1]

cp's OEIS Frontend

A346624 Irregular triangle read by rows: T(n,k) is the number of distinct Wilf classes of subsets of exactly k patterns in S_n, for 0 <= k <= n!.

Table of values

List of values