A208045 - cp's OEIS frontend

A208045 Number of n X n 0..3 arrays with new values 0..3 introduced in row major order and no element equal to any horizontal, vertical or antidiagonal neighbor (colorings ignoring permutations of colors).

n	a(n)
1	1
2	2
3	44
4	1904
5	168096
6	30818432
7	11838995200
8	9578237457408
9	16372889877477376
10	59262411624914853888
11	454901302416508366209024
12	7413673375795915677473636352

[1, 2, 44, 1904, 168096, 30818432, 11838995200, 9578237457408, 16372889877477376, 59262411624914853888, 454901302416508366209024, 7413673375795915677473636352]

cp's OEIS Frontend

A208045 Number of n X n 0..3 arrays with new values 0..3 introduced in row major order and no element equal to any horizontal, vertical or antidiagonal neighbor (colorings ignoring permutations of colors).

Table of values

List of values