A333159 - cp's OEIS frontend

A333159 Triangle read by rows: T(n,k) is the number of non-isomorphic n X n symmetric binary matrices with k ones in every row and column up to permutation of rows and columns.

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	1
6	1
7	1
8	1
9	1
10	1
11	1
12	2
13	1
14	1
15	1
16	1
17	2
18	2
19	1
20	1
21	1
22	1
23	4
24	5
25	4
26	1
27	1
28	1
29	1
30	4
31	12
32	12
33	4
34	1
35	1
36	1
37	1
38	7
39	31
40	66
41	31
42	7
43	1
44	1
45	1
46	1
47	8
48	90
49	433
50	433
51	90
52	8
53	1
54	1
55	1
56	1
57	12
58	285
59	3442
60	7937
61	3442
62	285
63	12
64	1
65	1
66	1
67	1
68	14
69	938
70	30404
71	171984
72	171984
73	30404
74	938
75	14
76	1
77	1

[1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 2, 2, 1, 1, 1, 1, 4, 5, 4, 1, 1, 1, 1, 4, 12, 12, 4, 1, 1, 1, 1, 7, 31, 66, 31, 7, 1, 1, 1, 1, 8, 90, 433, 433, 90, 8, 1, 1, 1, 1, 12, 285, 3442, 7937, 3442, 285, 12, 1, 1, 1, 1, 14, 938, 30404, 171984, 171984, 30404, 938, 14, 1, 1]

cp's OEIS Frontend

A333159 Triangle read by rows: T(n,k) is the number of non-isomorphic n X n symmetric binary matrices with k ones in every row and column up to permutation of rows and columns.

Table of values

List of values