A208303 - cp's OEIS frontend

A208303 Number of 3 X n 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)
0	1
1	5
2	52
3	2906
4	373780
5	87852626
6	33093356640
7	18383354934430
8	14216420560211868
9	14670987603972303070
10	19558496205580909812744
11	32828323774419481541135978
12	67939294184199439807451132308
13	170381709310740181061939305134514
14	510275358861788633812686061715278224

[1, 5, 52, 2906, 373780, 87852626, 33093356640, 18383354934430, 14216420560211868, 14670987603972303070, 19558496205580909812744, 32828323774419481541135978, 67939294184199439807451132308, 170381709310740181061939305134514, 510275358861788633812686061715278224]

cp's OEIS Frontend

A208303 Number of 3 X n 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