A008300 - cp's OEIS frontend

A008300 Triangle read by rows: T(n,k) (n >= 0, 0 <= k <= n) gives number of {0,1} n X n matrices with all row and column sums equal to 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	24
12	90
13	24
14	1
15	1
16	120
17	2040
18	2040
19	120
20	1
21	1
22	720
23	67950
24	297200
25	67950
26	720
27	1
28	1
29	5040
30	3110940
31	68938800
32	68938800
33	3110940
34	5040
35	1
36	1
37	40320
38	187530840
39	24046189440
40	116963796250
41	24046189440
42	187530840
43	40320
44	1
45	1
46	362880
47	14398171200
48	12025780892160
49	315031400802720
50	315031400802720
51	12025780892160
52	14398171200
53	362880
54	1

[1, 1, 1, 1, 2, 1, 1, 6, 6, 1, 1, 24, 90, 24, 1, 1, 120, 2040, 2040, 120, 1, 1, 720, 67950, 297200, 67950, 720, 1, 1, 5040, 3110940, 68938800, 68938800, 3110940, 5040, 1, 1, 40320, 187530840, 24046189440, 116963796250, 24046189440, 187530840, 40320, 1, 1, 362880, 14398171200, 12025780892160, 315031400802720, 315031400802720, 12025780892160, 14398171200, 362880, 1]

cp's OEIS Frontend

A008300 Triangle read by rows: T(n,k) (n >= 0, 0 <= k <= n) gives number of {0,1} n X n matrices with all row and column sums equal to k.

Table of values

List of values