A201989 - cp's OEIS frontend

A201989 T(n,k) is the number of n X k zero-sum -3..3 arrays with rows and columns lexicographically nondecreasing.

n	a(n)
1	1
2	4
3	4
4	8
5	77
6	8
7	18
8	1170
9	1170
10	18
11	32
12	14107
13	134217
14	14107
15	32
16	58
17	139471
18	11648559
19	11648559
20	139471
21	58
22	94
23	1177568
24	803133854
25	7375608084
26	803133854
27	1177568
28	94
29	151
30	8721417
31	46034224561
32	3674187761233
33	3674187761233

[1, 4, 4, 8, 77, 8, 18, 1170, 1170, 18, 32, 14107, 134217, 14107, 32, 58, 139471, 11648559, 11648559, 139471, 58, 94, 1177568, 803133854, 7375608084, 803133854, 1177568, 94, 151, 8721417, 46034224561, 3674187761233, 3674187761233]

cp's OEIS Frontend

A201989 T(n,k) is the number of n X k zero-sum -3..3 arrays with rows and columns lexicographically nondecreasing.

Table of values

List of values