A208866 - cp's OEIS frontend

A208866 Number of n X 2 0..3 arrays with new values 0..3 introduced in row major order and no element equal to more than one of its immediate leftward or upward or right-upward antidiagonal neighbors.

n	a(n)
1	2
2	12
3	143
4	1979
5	28246
6	405481
7	5826959
8	83752328
9	1203835147
10	17303737555
11	248721498050
12	3575088704597
13	51387836750983
14	738641752044964
15	10617135747615911
16	152609260439813291
17	2193584684852893774

[2, 12, 143, 1979, 28246, 405481, 5826959, 83752328, 1203835147, 17303737555, 248721498050, 3575088704597, 51387836750983, 738641752044964, 10617135747615911, 152609260439813291, 2193584684852893774]

cp's OEIS Frontend

A208866 Number of n X 2 0..3 arrays with new values 0..3 introduced in row major order and no element equal to more than one of its immediate leftward or upward or right-upward antidiagonal neighbors.

Table of values

List of values