A222826 - cp's OEIS frontend

A222826 Number of nX3 0..3 arrays with no more than floor(nX3/2) elements equal to at least one horizontal, vertical or antidiagonal neighbor, with new values introduced in row major 0..3 order.

n	a(n)
1	2
2	80
3	2695
4	163059
5	4990235
6	324288311
7	10170499564
8	674288738013
9	21373928441126
10	1435823246721009
11	45884479727848365
12	3108101397467123619
13	99916343889082020272
14	6807459787910922090689
15	219837420324993531866814

[2, 80, 2695, 163059, 4990235, 324288311, 10170499564, 674288738013, 21373928441126, 1435823246721009, 45884479727848365, 3108101397467123619, 99916343889082020272, 6807459787910922090689, 219837420324993531866814]

cp's OEIS Frontend

A222826 Number of nX3 0..3 arrays with no more than floor(nX3/2) elements equal to at least one horizontal, vertical or antidiagonal neighbor, with new values introduced in row major 0..3 order.

Table of values

List of values