A205415 - cp's OEIS frontend

A205415 T(n,k)=Number of (n+2)X(k+2) 0..2 arrays with every 3X3 subblock having three equal elements in a row horizontally, vertically or nw-to-se diagonally exactly two ways, and new values 0..2 introduced in row major order.

n	a(n)
1	468
2	3868
3	3868
4	33322
5	44596
6	33322
7	236576
8	549414
9	549414
10	236576
11	1820215
12	5686031
13	10331386
14	5686031
15	1820215
16	14452683
17	64878898
18	151598017
19	151598017
20	64878898
21	14452683
22	109757792
23	768581101
24	2553087985
25	2839359056
26	2553087985

[468, 3868, 3868, 33322, 44596, 33322, 236576, 549414, 549414, 236576, 1820215, 5686031, 10331386, 5686031, 1820215, 14452683, 64878898, 151598017, 151598017, 64878898, 14452683, 109757792, 768581101, 2553087985, 2839359056, 2553087985]

cp's OEIS Frontend

A205415 T(n,k)=Number of (n+2)X(k+2) 0..2 arrays with every 3X3 subblock having three equal elements in a row horizontally, vertically or nw-to-se diagonally exactly two ways, and new values 0..2 introduced in row major order.

Table of values

List of values