A302509 - cp's OEIS frontend

A302509 Number of n X n 0..1 arrays with every element equal to 0, 1, 4 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

n	a(n)
1	1
2	3
3	11
4	28
5	90
6	458
7	4558
8	82857
9	1748514
10	44378638
11	1537387012
12	96444437992
13	9693542232011
14	1237134041433890
15	196120841811367262
16	47516901892945494991
17	19045444458145286230306

[1, 3, 11, 28, 90, 458, 4558, 82857, 1748514, 44378638, 1537387012, 96444437992, 9693542232011, 1237134041433890, 196120841811367262, 47516901892945494991, 19045444458145286230306]

cp's OEIS Frontend

A302509 Number of n X n 0..1 arrays with every element equal to 0, 1, 4 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

Table of values

List of values