A222825 - cp's OEIS frontend

A222825 Number of nX2 0..3 arrays with no more than floor(nX2/2) 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	1
2	8
3	80
4	1154
5	14388
6	200082
7	2652496
8	36622104
9	498427856
10	6893943128
11	95040804864
12	1319624517920
13	18325966197056
14	255430185200544
15	3564132957005568
16	49841772120587648
17	697848234833263872

[1, 8, 80, 1154, 14388, 200082, 2652496, 36622104, 498427856, 6893943128, 95040804864, 1319624517920, 18325966197056, 255430185200544, 3564132957005568, 49841772120587648, 697848234833263872]

cp's OEIS Frontend

A222825 Number of nX2 0..3 arrays with no more than floor(nX2/2) 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