A217202 - cp's OEIS frontend

A217202 Triangle read by rows, arising in enumeration of permutations by cyclic valleys, cycles and fixed points.

n	a(n)
1	0
2	1
3	2
4	7
5	2
6	28
7	16
8	131
9	118
10	16
11	690
12	892
13	272
14	4033
15	7060
16	3468
17	272
18	25864
19	58608
20	41088
21	7936
22	180265
23	510812
24	479772
25	156176
26	7936
27	1354458
28	4675912
29	5635224
30	2665184
31	353792
32	10898823
33	44918110
34	67238764
35	42832648
36	9972704
37	353792
38	93407828
39	452104928

[0, 1, 2, 7, 2, 28, 16, 131, 118, 16, 690, 892, 272, 4033, 7060, 3468, 272, 25864, 58608, 41088, 7936, 180265, 510812, 479772, 156176, 7936, 1354458, 4675912, 5635224, 2665184, 353792, 10898823, 44918110, 67238764, 42832648, 9972704, 353792, 93407828, 452104928]

cp's OEIS Frontend

A217202 Triangle read by rows, arising in enumeration of permutations by cyclic valleys, cycles and fixed points.

Table of values

List of values