A205408 - cp's OEIS frontend

A205408 Number of (n+2) X 3 0..2 arrays with every 3 X 3 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	33322
4	236576
5	1820215
6	14452683
7	109757792
8	844627201
9	6555663807
10	50395116296
11	388310279461
12	2998496455277
13	23106198583152
14	178125506630869
15	1373888878002903
16	10592170949339668
17	81666691848271821
18	629737361145882421

[468, 3868, 33322, 236576, 1820215, 14452683, 109757792, 844627201, 6555663807, 50395116296, 388310279461, 2998496455277, 23106198583152, 178125506630869, 1373888878002903, 10592170949339668, 81666691848271821, 629737361145882421]

cp's OEIS Frontend

A205408 Number of (n+2) X 3 0..2 arrays with every 3 X 3 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