A283796 - cp's OEIS frontend

A283796 Triangle T(n,k) read by rows: the number of symmetric q-circulant n X n {0,1}-matrices where each row and each column sum equals k.

n	a(n)
0	1
1	1
2	1
3	1
4	2
5	1
6	1
7	4
8	4
9	1
10	1
11	6
12	6
13	6
14	1
15	1
16	6
17	12
18	12
19	6
20	1
21	1
22	8
23	18
24	22
25	18
26	8
27	1
28	1
29	8
30	24
31	38
32	38
33	24
34	8
35	1
36	1
37	16
38	38
39	80
40	86
41	80
42	38
43	16
44	1
45	1
46	10
47	40
48	88
49	132
50	132
51	88
52	40
53	10
54	1
55	1
56	12
57	50
58	128
59	220
60	262
61	220
62	128
63	50
64	12
65	1
66	1
67	12
68	60
69	170
70	340
71	472
72	472
73	340
74	170
75	60
76	12
77	1

[1, 1, 1, 1, 2, 1, 1, 4, 4, 1, 1, 6, 6, 6, 1, 1, 6, 12, 12, 6, 1, 1, 8, 18, 22, 18, 8, 1, 1, 8, 24, 38, 38, 24, 8, 1, 1, 16, 38, 80, 86, 80, 38, 16, 1, 1, 10, 40, 88, 132, 132, 88, 40, 10, 1, 1, 12, 50, 128, 220, 262, 220, 128, 50, 12, 1, 1, 12, 60, 170, 340, 472, 472, 340, 170, 60, 12, 1]

cp's OEIS Frontend

A283796 Triangle T(n,k) read by rows: the number of symmetric q-circulant n X n {0,1}-matrices where each row and each column sum equals k.

Table of values

List of values

n	a(n)
0	1
1	1
2	1
3	1
4	2
5	1
6	1
7	4
8	4
9	1
10	1
11	6
12	6
13	6
14	1
15	1
16	6
17	12
18	12
19	6
20	1
21	1
22	8
23	18
24	22
25	18
26	8
27	1
28	1
29	8
30	24
31	38
32	38
33	24
34	8
35	1
36	1
37	16
38	38
39	80
40	86
41	80
42	38
43	16
44	1
45	1
46	10
47	40
48	88
49	132
50	132
51	88
52	40
53	10
54	1
55	1
56	12
57	50
58	128
59	220
60	262
61	220
62	128
63	50
64	12
65	1
66	1
67	12
68	60
69	170
70	340
71	472
72	472
73	340
74	170
75	60
76	12
77	1

n	a(n)
0	1
1	1
2	1
3	1
4	2
5	1
6	1
7	4
8	4
9	1
10	1
11	6
12	6
13	6
14	1
15	1
16	6
17	12
18	12
19	6
20	1
21	1
22	8
23	18
24	22
25	18
26	8
27	1
28	1
29	8
30	24
31	38
32	38
33	24
34	8
35	1
36	1
37	16
38	38
39	80
40	86
41	80
42	38
43	16
44	1
45	1
46	10
47	40
48	88
49	132
50	132
51	88
52	40
53	10
54	1
55	1
56	12
57	50
58	128
59	220
60	262
61	220
62	128
63	50
64	12
65	1
66	1
67	12
68	60
69	170
70	340
71	472
72	472
73	340
74	170
75	60
76	12
77	1

n	a(n)
0	1
1	1
2	1
3	1
4	2
5	1
6	1
7	4
8	4
9	1
10	1
11	6
12	6
13	6
14	1
15	1
16	6
17	12
18	12
19	6
20	1
21	1
22	8
23	18
24	22
25	18
26	8
27	1
28	1
29	8
30	24
31	38
32	38
33	24
34	8
35	1
36	1
37	16
38	38
39	80
40	86
41	80
42	38
43	16
44	1
45	1
46	10
47	40
48	88
49	132
50	132
51	88
52	40
53	10
54	1
55	1
56	12
57	50
58	128
59	220
60	262
61	220
62	128
63	50
64	12
65	1
66	1
67	12
68	60
69	170
70	340
71	472
72	472
73	340
74	170
75	60
76	12
77	1