A208097 - cp's OEIS frontend

A208097 Number of 2 X n nonnegative integer arrays with new values 0 upwards introduced in row major order and no element equal to any horizontal, diagonal or antidiagonal neighbor (colorings ignoring permutations of colors).

n	a(n)
1	2
2	4
3	30
4	377
5	7239
6	193228
7	6752442
8	296290708
9	15835464207
10	1007305486325
11	74890158775564
12	6413015600048526
13	624933541074620780
14	68603269124243415049
15	8411144435499643711885
16	1143251056778815843116186

[2, 4, 30, 377, 7239, 193228, 6752442, 296290708, 15835464207, 1007305486325, 74890158775564, 6413015600048526, 624933541074620780, 68603269124243415049, 8411144435499643711885, 1143251056778815843116186]

cp's OEIS Frontend

A208097 Number of 2 X n nonnegative integer arrays with new values 0 upwards introduced in row major order and no element equal to any horizontal, diagonal or antidiagonal neighbor (colorings ignoring permutations of colors).

Table of values

List of values