A333901 - cp's OEIS frontend

A333901 Array read by antidiagonals: T(n,k) is the number of n X k nonnegative integer matrices with all column sums n and row sums k.

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	3
13	1
14	1
15	1
16	1
17	7
18	7
19	1
20	1
21	1
22	1
23	19
24	55
25	19
26	1
27	1
28	1
29	1
30	51
31	415
32	415
33	51
34	1
35	1
36	1
37	1
38	141
39	3391
40	10147
41	3391
42	141
43	1
44	1
45	1
46	1
47	393
48	28681
49	261331
50	261331
51	28681
52	393
53	1
54	1
55	1
56	1
57	1107
58	248137
59	7100821
60	22069251
61	7100821
62	248137
63	1107
64	1
65	1

[1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 3, 1, 1, 1, 1, 7, 7, 1, 1, 1, 1, 19, 55, 19, 1, 1, 1, 1, 51, 415, 415, 51, 1, 1, 1, 1, 141, 3391, 10147, 3391, 141, 1, 1, 1, 1, 393, 28681, 261331, 261331, 28681, 393, 1, 1, 1, 1, 1107, 248137, 7100821, 22069251, 7100821, 248137, 1107, 1, 1]

cp's OEIS Frontend

A333901 Array read by antidiagonals: T(n,k) is the number of n X k nonnegative integer matrices with all column sums n and row sums k.

Table of values

List of values