A223042 - cp's OEIS frontend

A223042 Number of 2Xn 0..3 arrays with no more than floor(2Xn/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	8
3	98
4	1265
5	17356
6	241583
7	3395532
8	48048796
9	683306658
10	9759462283
11	139866408792
12	2010279482902
13	28963821801648
14	418182844095108
15	6048773850787538
16	87632133398349504
17	1271377018275506438

[2, 8, 98, 1265, 17356, 241583, 3395532, 48048796, 683306658, 9759462283, 139866408792, 2010279482902, 28963821801648, 418182844095108, 6048773850787538, 87632133398349504, 1271377018275506438]

cp's OEIS Frontend

A223042 Number of 2Xn 0..3 arrays with no more than floor(2Xn/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