A223038 - cp's OEIS frontend

A223038 Number of nX3 0..3 arrays with no more than floor(nX3/2) elements equal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..3 order.

n	a(n)
1	2
2	98
3	3780
4	255943
5	10904199
6	751990800
7	33007705273
8	2293741863398
9	102466787449225
10	7147587418650349
11	323100169712798727
12	22585791054054582654
13	1029786157956416130280
14	72077809347126994984977

[2, 98, 3780, 255943, 10904199, 751990800, 33007705273, 2293741863398, 102466787449225, 7147587418650349, 323100169712798727, 22585791054054582654, 1029786157956416130280, 72077809347126994984977]

cp's OEIS Frontend

A223038 Number of nX3 0..3 arrays with no more than floor(nX3/2) elements equal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..3 order.

Table of values

List of values