A062881 - cp's OEIS frontend

A062881 Number of partitions of n^2 into exactly n nonzero parts, such that there are at most one 1's, two 2's, ... n-1 n-1's, n n's, n-1 n+1's, ... two 2n-2's and one 2n-1.

n	a(n)
1	1
2	2
3	5
4	17
5	66
6	295
7	1408
8	7103
9	37140
10	199915
11	1100752
12	6174851
13	35179360
14	203069441
15	1185443261
16	6987897811
17	41544411702
18	248853224179
19	1500635461876
20	9103375030686
21	55521964829070
22	340282330969943
23	2094756627157200

[1, 2, 5, 17, 66, 295, 1408, 7103, 37140, 199915, 1100752, 6174851, 35179360, 203069441, 1185443261, 6987897811, 41544411702, 248853224179, 1500635461876, 9103375030686, 55521964829070, 340282330969943, 2094756627157200]

cp's OEIS Frontend

A062881 Number of partitions of n^2 into exactly n nonzero parts, such that there are at most one 1's, two 2's, ... n-1 n-1's, n n's, n-1 n+1's, ... two 2n-2's and one 2n-1.

Table of values

List of values