A331485 - cp's OEIS frontend

A331485 Array read by antidiagonals: A(n,k) is the number of nonequivalent nonnegative integer matrices with k columns and any number of nonzero rows with column sums n up to permutation of rows and columns.

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	1
6	1
7	2
8	2
9	1
10	1
11	3
12	7
13	3
14	1
15	1
16	5
17	23
18	21
19	5
20	1
21	1
22	7
23	79
24	162
25	66
26	7
27	1
28	1
29	11
30	274
31	1636
32	1338
33	192
34	11
35	1
36	1
37	15
38	1003
39	19977
40	43686
41	10585
42	565
43	15
44	1
45	1
46	22
47	3763
48	298416
49	2142277
50	1178221
51	82694
52	1579
53	22
54	1
55	1
56	30
57	14723
58	5300296
59	149056260
60	232984145
61	30370346
62	612700
63	4348
64	30
65	1

[1, 1, 1, 1, 1, 1, 1, 2, 2, 1, 1, 3, 7, 3, 1, 1, 5, 23, 21, 5, 1, 1, 7, 79, 162, 66, 7, 1, 1, 11, 274, 1636, 1338, 192, 11, 1, 1, 15, 1003, 19977, 43686, 10585, 565, 15, 1, 1, 22, 3763, 298416, 2142277, 1178221, 82694, 1579, 22, 1, 1, 30, 14723, 5300296, 149056260, 232984145, 30370346, 612700, 4348, 30, 1]

cp's OEIS Frontend

A331485 Array read by antidiagonals: A(n,k) is the number of nonequivalent nonnegative integer matrices with k columns and any number of nonzero rows with column sums n up to permutation of rows and columns.

Table of values

List of values