A259471 - cp's OEIS frontend

A259471 Triangle read by rows: T(n,k) is the number of semi-regular relations on n nodes with each node having out-degree k (0 <= k <= n).

n	a(n)
0	1
1	1
2	1
3	1
4	3
5	1
6	1
7	7
8	7
9	1
10	1
11	19
12	66
13	19
14	1
15	1
16	47
17	916
18	916
19	47
20	1
21	1
22	130
23	16816
24	91212
25	16816
26	130
27	1
28	1
29	343
30	373630
31	12888450
32	12888450
33	373630
34	343
35	1
36	1
37	951
38	9727010
39	2411213698
40	14334255100
41	2411213698
42	9727010
43	951
44	1
45	1
46	2615
47	289374391
48	575737451509
49	22080097881081
50	22080097881081
51	575737451509
52	289374391
53	2615
54	1

[1, 1, 1, 1, 3, 1, 1, 7, 7, 1, 1, 19, 66, 19, 1, 1, 47, 916, 916, 47, 1, 1, 130, 16816, 91212, 16816, 130, 1, 1, 343, 373630, 12888450, 12888450, 373630, 343, 1, 1, 951, 9727010, 2411213698, 14334255100, 2411213698, 9727010, 951, 1, 1, 2615, 289374391, 575737451509, 22080097881081, 22080097881081, 575737451509, 289374391, 2615, 1]

cp's OEIS Frontend

A259471 Triangle read by rows: T(n,k) is the number of semi-regular relations on n nodes with each node having out-degree k (0 <= k <= n).

Table of values

List of values