A222682 - cp's OEIS frontend

A222682 Number of 4Xn 0..3 arrays with no more than floor(4Xn/2) elements unequal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..3 order.

n	a(n)
1	15
2	18
3	130
4	527
5	5374
6	58167
7	687222
8	11377192
9	157746714
10	2877417604
11	41716355254
12	762816679067
13	11260740512076
14	204256746622744
15	3052246394940308

[15, 18, 130, 527, 5374, 58167, 687222, 11377192, 157746714, 2877417604, 41716355254, 762816679067, 11260740512076, 204256746622744, 3052246394940308]

cp's OEIS Frontend

A222682 Number of 4Xn 0..3 arrays with no more than floor(4Xn/2) elements unequal 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