A207993 - cp's OEIS frontend

A207993 Number of n X n 0..2 arrays with new values 0..2 introduced in row major order and no element equal to any horizontal or vertical neighbor (colorings ignoring permutations of colors).

n	a(n)
1	1
2	3
3	41
4	1302
5	96831
6	16932816
7	6978332618
8	6787438272198
9	15595829208171337
10	84713253582265127190
11	1088296274542436098185362
12	33079232010276428576508643620
13	2379573338713223879592059518246838

[1, 3, 41, 1302, 96831, 16932816, 6978332618, 6787438272198, 15595829208171337, 84713253582265127190, 1088296274542436098185362, 33079232010276428576508643620, 2379573338713223879592059518246838]

cp's OEIS Frontend

A207993 Number of n X n 0..2 arrays with new values 0..2 introduced in row major order and no element equal to any horizontal or vertical neighbor (colorings ignoring permutations of colors).

Table of values

List of values