A318805 - cp's OEIS frontend

A318805 Array read by antidiagonals: T(n,k) is the number of inequivalent symmetric nonnegative integer n X n matrices with sum of elements equal to k, under row and column permutations.

n	a(n)
1	1
2	1
3	1
4	1
5	2
6	1
7	1
8	3
9	2
10	1
11	1
12	5
13	4
14	2
15	1
16	1
17	6
18	8
19	4
20	2
21	1
22	1
23	8
24	13
25	9
26	4
27	2
28	1
29	1
30	10
31	22
32	16
33	9
34	4
35	2
36	1
37	1
38	13
39	33
40	32
41	17
42	9
43	4
44	2
45	1
46	1
47	15
48	52
49	57
50	35
51	17
52	9
53	4
54	2
55	1
56	1
57	18
58	76
59	105
60	68
61	36
62	17
63	9
64	4
65	2
66	1
67	1
68	21
69	108
70	178
71	139
72	71
73	36
74	17
75	9
76	4
77	2
78	1

[1, 1, 1, 1, 2, 1, 1, 3, 2, 1, 1, 5, 4, 2, 1, 1, 6, 8, 4, 2, 1, 1, 8, 13, 9, 4, 2, 1, 1, 10, 22, 16, 9, 4, 2, 1, 1, 13, 33, 32, 17, 9, 4, 2, 1, 1, 15, 52, 57, 35, 17, 9, 4, 2, 1, 1, 18, 76, 105, 68, 36, 17, 9, 4, 2, 1, 1, 21, 108, 178, 139, 71, 36, 17, 9, 4, 2, 1]

cp's OEIS Frontend

A318805 Array read by antidiagonals: T(n,k) is the number of inequivalent symmetric nonnegative integer n X n matrices with sum of elements equal to k, under row and column permutations.

Table of values

List of values

n	a(n)
1	1
2	1
3	1
4	1
5	2
6	1
7	1
8	3
9	2
10	1
11	1
12	5
13	4
14	2
15	1
16	1
17	6
18	8
19	4
20	2
21	1
22	1
23	8
24	13
25	9
26	4
27	2
28	1
29	1
30	10
31	22
32	16
33	9
34	4
35	2
36	1
37	1
38	13
39	33
40	32
41	17
42	9
43	4
44	2
45	1
46	1
47	15
48	52
49	57
50	35
51	17
52	9
53	4
54	2
55	1
56	1
57	18
58	76
59	105
60	68
61	36
62	17
63	9
64	4
65	2
66	1
67	1
68	21
69	108
70	178
71	139
72	71
73	36
74	17
75	9
76	4
77	2
78	1

n	a(n)
1	1
2	1
3	1
4	1
5	2
6	1
7	1
8	3
9	2
10	1
11	1
12	5
13	4
14	2
15	1
16	1
17	6
18	8
19	4
20	2
21	1
22	1
23	8
24	13
25	9
26	4
27	2
28	1
29	1
30	10
31	22
32	16
33	9
34	4
35	2
36	1
37	1
38	13
39	33
40	32
41	17
42	9
43	4
44	2
45	1
46	1
47	15
48	52
49	57
50	35
51	17
52	9
53	4
54	2
55	1
56	1
57	18
58	76
59	105
60	68
61	36
62	17
63	9
64	4
65	2
66	1
67	1
68	21
69	108
70	178
71	139
72	71
73	36
74	17
75	9
76	4
77	2
78	1

n	a(n)
1	1
2	1
3	1
4	1
5	2
6	1
7	1
8	3
9	2
10	1
11	1
12	5
13	4
14	2
15	1
16	1
17	6
18	8
19	4
20	2
21	1
22	1
23	8
24	13
25	9
26	4
27	2
28	1
29	1
30	10
31	22
32	16
33	9
34	4
35	2
36	1
37	1
38	13
39	33
40	32
41	17
42	9
43	4
44	2
45	1
46	1
47	15
48	52
49	57
50	35
51	17
52	9
53	4
54	2
55	1
56	1
57	18
58	76
59	105
60	68
61	36
62	17
63	9
64	4
65	2
66	1
67	1
68	21
69	108
70	178
71	139
72	71
73	36
74	17
75	9
76	4
77	2
78	1