A216964 - cp's OEIS frontend

A216964 Triangle read by rows, arising in enumeration of permutations by cyclic valleys, cycles and fixed points.

n	a(n)
1	1
2	2
3	6
4	22
5	2
6	94
7	26
8	460
9	244
10	16
11	2532
12	2124
13	384
14	15420
15	18536
16	6092
17	272
18	102620
19	166440
20	83436
21	10384
22	739512
23	1550864
24	1082712
25	247776
26	7936
27	5729192
28	15040112
29	13841928
30	4864480
31	441088
32	47429896
33	151960264
34	177512632
35	87003032
36	14741984
37	353792

[1, 2, 6, 22, 2, 94, 26, 460, 244, 16, 2532, 2124, 384, 15420, 18536, 6092, 272, 102620, 166440, 83436, 10384, 739512, 1550864, 1082712, 247776, 7936, 5729192, 15040112, 13841928, 4864480, 441088, 47429896, 151960264, 177512632, 87003032, 14741984, 353792]

cp's OEIS Frontend

A216964 Triangle read by rows, arising in enumeration of permutations by cyclic valleys, cycles and fixed points.

Table of values

List of values