A178517 - cp's OEIS frontend

A178517 Triangle read by rows: T(n,k) is the number of non-derangement permutations of {1,2,...,n} having genus k (see first comment for definition of genus).

n	a(n)
1	1
2	1
3	0
4	4
5	0
6	0
7	11
8	4
9	0
10	0
11	36
12	40
13	0
14	0
15	0
16	117
17	290
18	48
19	0
20	0
21	0
22	393
23	1785
24	1008
25	0
26	0
27	0
28	0
29	1339
30	9996
31	12712
32	1440
33	0
34	0
35	0
36	0
37	4630
38	52584
39	123858
40	48312
41	0
42	0
43	0
44	0
45	0
46	16193
47	264720
48	1027446
49	904840
50	80640
51	0
52	0
53	0
54	0
55	0
56	57201
57	1290135
58	7627158
59	12449800
60	3807936
61	0

[1, 1, 0, 4, 0, 0, 11, 4, 0, 0, 36, 40, 0, 0, 0, 117, 290, 48, 0, 0, 0, 393, 1785, 1008, 0, 0, 0, 0, 1339, 9996, 12712, 1440, 0, 0, 0, 0, 4630, 52584, 123858, 48312, 0, 0, 0, 0, 0, 16193, 264720, 1027446, 904840, 80640, 0, 0, 0, 0, 0, 57201, 1290135, 7627158, 12449800, 3807936, 0]

cp's OEIS Frontend

A178517 Triangle read by rows: T(n,k) is the number of non-derangement permutations of {1,2,...,n} having genus k (see first comment for definition of genus).

Table of values

List of values