A201958 - cp's OEIS frontend

A201958 T(n,k)=Number of zero-sum nXk -3..3 arrays with every element unequal to at most two horizontal and vertical neighbors.

n	a(n)
1	1
2	7
3	7
4	37
5	231
6	37
7	231
8	1587
9	1587
10	231
11	1451
12	17903
13	17091
14	17903
15	1451
16	9331
17	194633
18	303955
19	303955
20	194633
21	9331
22	60691
23	2232183
24	4735345
25	9654533
26	4735345
27	2232183
28	60691
29	398567
30	25952953
31	85454789
32	300895245
33	300895245
34	85454789

[1, 7, 7, 37, 231, 37, 231, 1587, 1587, 231, 1451, 17903, 17091, 17903, 1451, 9331, 194633, 303955, 303955, 194633, 9331, 60691, 2232183, 4735345, 9654533, 4735345, 2232183, 60691, 398567, 25952953, 85454789, 300895245, 300895245, 85454789]

cp's OEIS Frontend

A201958 T(n,k)=Number of zero-sum nXk -3..3 arrays with every element unequal to at most two horizontal and vertical neighbors.

Table of values

List of values