A208956 - cp's OEIS frontend

A208956 Triangular array read by rows. T(n,k) is the number of n-permutations that have at least k fixed points with n >= 1 and 1 <= k <= n.

n	a(n)
1	1
2	1
3	1
4	4
5	1
6	1
7	15
8	7
9	1
10	1
11	76
12	31
13	11
14	1
15	1
16	455
17	191
18	56
19	16
20	1
21	1
22	3186
23	1331
24	407
25	92
26	22
27	1
28	1
29	25487
30	10655
31	3235
32	771
33	141
34	29
35	1
36	1
37	229384
38	95887
39	29143
40	6883
41	1339
42	205
43	37
44	1
45	1
46	2293839
47	958879
48	291394
49	68914
50	13264
51	2176
52	286
53	46
54	1
55	1

[1, 1, 1, 4, 1, 1, 15, 7, 1, 1, 76, 31, 11, 1, 1, 455, 191, 56, 16, 1, 1, 3186, 1331, 407, 92, 22, 1, 1, 25487, 10655, 3235, 771, 141, 29, 1, 1, 229384, 95887, 29143, 6883, 1339, 205, 37, 1, 1, 2293839, 958879, 291394, 68914, 13264, 2176, 286, 46, 1, 1]

cp's OEIS Frontend

A208956 Triangular array read by rows. T(n,k) is the number of n-permutations that have at least k fixed points with n >= 1 and 1 <= k <= n.

Table of values

List of values