A321660 - cp's OEIS frontend

A321660 Number of nonnegative integer matrices with sum of entries equal to n and no zero rows or columns, whose entries are all distinct.

n	a(n)
0	1
1	1
2	1
3	5
4	5
5	9
6	45
7	49
8	85
9	125
10	233
11	273
12	417
13	529
14	745
15	2573
16	2861
17	4761
18	6837
19	10489
20	14317
21	22637
22	28289
23	40041
24	52041
25	70177
26	88561
27	117605
28	234773
29	274761
30	407469
31	553681
32	792613
33	1052525
34	1493033
35	1959009
36	3135537
37	3904129
38	5475673
39	7173725
40	9853325

[1, 1, 1, 5, 5, 9, 45, 49, 85, 125, 233, 273, 417, 529, 745, 2573, 2861, 4761, 6837, 10489, 14317, 22637, 28289, 40041, 52041, 70177, 88561, 117605, 234773, 274761, 407469, 553681, 792613, 1052525, 1493033, 1959009, 3135537, 3904129, 5475673, 7173725, 9853325]

cp's OEIS Frontend

A321660 Number of nonnegative integer matrices with sum of entries equal to n and no zero rows or columns, whose entries are all distinct.

Table of values

List of values