A208302 - cp's OEIS frontend

A208302 Number of 2Xn 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	5
3	42
4	602
5	12840
6	373780
7	14050312
8	656404264
9	37060650272
10	2475181138384
11	192262536609952
12	17131843186425504
13	1731360533569170048
14	196551307092757144384
15	24860319276726031245440
16	3478554309451804194287232

[2, 5, 42, 602, 12840, 373780, 14050312, 656404264, 37060650272, 2475181138384, 192262536609952, 17131843186425504, 1731360533569170048, 196551307092757144384, 24860319276726031245440, 3478554309451804194287232]

cp's OEIS Frontend

A208302 Number of 2Xn 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