A349106 - cp's OEIS frontend

A349106 Irregular triangle read by rows: T(n,k) is the number of permutations of {1,2,...,n} with cycle descent number equal to k.

n	a(n)
0	1
1	1
2	2
3	5
4	1
5	15
6	8
7	1
8	52
9	51
10	16
11	1
12	203
13	312
14	172
15	32
16	1
17	877
18	1926
19	1611
20	561
21	64
22	1
23	4140
24	12224
25	14289
26	7744
27	1794
28	128
29	1
30	21147
31	80401
32	124410
33	95255
34	35755
35	5655
36	256
37	1
38	115975
39	549776
40	1083148
41	1103280
42	597908
43	160576
44	17624
45	512
46	1
47	678570
48	3911865
49	9528751
50	12386837
51	9044652
52	3604756
53	705915
54	54429
55	1024
56	1

[1, 1, 2, 5, 1, 15, 8, 1, 52, 51, 16, 1, 203, 312, 172, 32, 1, 877, 1926, 1611, 561, 64, 1, 4140, 12224, 14289, 7744, 1794, 128, 1, 21147, 80401, 124410, 95255, 35755, 5655, 256, 1, 115975, 549776, 1083148, 1103280, 597908, 160576, 17624, 512, 1, 678570, 3911865, 9528751, 12386837, 9044652, 3604756, 705915, 54429, 1024, 1]

cp's OEIS Frontend

A349106 Irregular triangle read by rows: T(n,k) is the number of permutations of {1,2,...,n} with cycle descent number equal to k.

Table of values

List of values