A283795 - cp's OEIS frontend

A283795 Triangle T(n,k) read by rows: the number of q-circulant n X n {0,1}-matrices where each row sum and each column sum equals k.

n	a(n)
0	1
1	1
2	1
3	1
4	2
5	1
6	1
7	6
8	6
9	1
10	1
11	8
12	14
13	8
14	1
15	1
16	20
17	40
18	40
19	20
20	1
21	1
22	12
23	42
24	44
25	42
26	12
27	1
28	1
29	42
30	126
31	210
32	210
33	126
34	42
35	1
36	1
37	32
38	136
39	224
40	350
41	224
42	136
43	32
44	1
45	1
46	54
47	216
48	546
49	756
50	756
51	546
52	216
53	54
54	1
55	1
56	40
57	260
58	480
59	1200
60	1032
61	1200
62	480
63	260
64	40
65	1
66	1
67	110
68	550
69	1650
70	3300
71	4620
72	4620
73	3300
74	1650
75	550
76	110
77	1
78	1
79	48
80	324
81	992
82	2538
83	3168

[1, 1, 1, 1, 2, 1, 1, 6, 6, 1, 1, 8, 14, 8, 1, 1, 20, 40, 40, 20, 1, 1, 12, 42, 44, 42, 12, 1, 1, 42, 126, 210, 210, 126, 42, 1, 1, 32, 136, 224, 350, 224, 136, 32, 1, 1, 54, 216, 546, 756, 756, 546, 216, 54, 1, 1, 40, 260, 480, 1200, 1032, 1200, 480, 260, 40, 1, 1, 110, 550, 1650, 3300, 4620, 4620, 3300, 1650, 550, 110, 1, 1, 48, 324, 992, 2538, 3168]

cp's OEIS Frontend

A283795 Triangle T(n,k) read by rows: the number of q-circulant n X n {0,1}-matrices where each row sum and each column sum equals k.

Table of values

List of values