A209517 - cp's OEIS frontend

A209517 T(n,k) = Number of (n+1) X (k+1) 0..2 arrays with the number of clockwise edge increases in every 2 X 2 subblock equal to the number of counterclockwise edge increases.

n	a(n)
1	57
2	363
3	363
4	2313
5	4995
6	2313
7	14739
8	68937
9	68937
10	14739
11	93921
12	951777
13	2071311
14	951777
15	93921
16	598491
17	13141335
18	62340543
19	62340543
20	13141335
21	598491
22	3813753
23	181445643
24	1876947141
25	4099186545
26	1876947141
27	181445643
28	3813753
29	24302307

[57, 363, 363, 2313, 4995, 2313, 14739, 68937, 68937, 14739, 93921, 951777, 2071311, 951777, 93921, 598491, 13141335, 62340543, 62340543, 13141335, 598491, 3813753, 181445643, 1876947141, 4099186545, 1876947141, 181445643, 3813753, 24302307]

cp's OEIS Frontend

A209517 T(n,k) = Number of (n+1) X (k+1) 0..2 arrays with the number of clockwise edge increases in every 2 X 2 subblock equal to the number of counterclockwise edge increases.

Table of values

List of values