A201803 - cp's OEIS frontend

A201803 T(n,k)=Number of zero-sum nXk -2..2 arrays with every element unequal to at most two horizontal and vertical neighbors.

n	a(n)
1	1
2	5
3	5
4	19
5	85
6	19
7	85
8	455
9	455
10	85
11	381
12	3617
13	4057
14	3617
15	381
16	1751
17	28625
18	48335
19	48335
20	28625
21	1751
22	8135
23	235827
24	562961
25	988589
26	562961
27	235827
28	8135
29	38165
30	1972115
31	7099021
32	20960485
33	20960485
34	7099021
35	1972115
36	38165
37	180325
38	16703881

[1, 5, 5, 19, 85, 19, 85, 455, 455, 85, 381, 3617, 4057, 3617, 381, 1751, 28625, 48335, 48335, 28625, 1751, 8135, 235827, 562961, 988589, 562961, 235827, 8135, 38165, 1972115, 7099021, 20960485, 20960485, 7099021, 1972115, 38165, 180325, 16703881]

cp's OEIS Frontend

A201803 T(n,k)=Number of zero-sum nXk -2..2 arrays with every element unequal to at most two horizontal and vertical neighbors.

Table of values

List of values