A208297 - cp's OEIS frontend

A208297 Number of nX3 nonnegative integer arrays with new values 0 upwards introduced in row major order and no element equal to any horizontal or antidiagonal neighbor (colorings ignoring permutations of colors).

n	a(n)
1	2
2	42
3	2906
4	433252
5	113503692
6	46538017584
7	27700815674032
8	22702140562948192
9	24626774613248937584
10	34296243004533645925408
11	59839415643338575851475744
12	128222446504879248765189962560
13	331858429902640216546970620625280

[2, 42, 2906, 433252, 113503692, 46538017584, 27700815674032, 22702140562948192, 24626774613248937584, 34296243004533645925408, 59839415643338575851475744, 128222446504879248765189962560, 331858429902640216546970620625280]

cp's OEIS Frontend

A208297 Number of nX3 nonnegative integer arrays with new values 0 upwards introduced in row major order and no element equal to any horizontal or antidiagonal neighbor (colorings ignoring permutations of colors).

Table of values

List of values