A230702 - cp's OEIS frontend

A230702 Number of (n+3)X(2+3) 0..2 white square subarrays x(i,j) with each element diagonally or antidiagonally next to at least one element with value (x(i,j)+1) mod 3, and upper left element zero.

n	a(n)
1	8
2	28
3	244
4	800
5	6576
6	21076
7	173428
8	554040
9	4558536
10	14555468
11	119758148
12	382358832
13	3145930352
14	10044068932
15	82639468964
16	263844008200
17	2170826159272
18	6930820136252
19	57024624645332
20	182063126310336
21	1497958570841456

[8, 28, 244, 800, 6576, 21076, 173428, 554040, 4558536, 14555468, 119758148, 382358832, 3145930352, 10044068932, 82639468964, 263844008200, 2170826159272, 6930820136252, 57024624645332, 182063126310336, 1497958570841456]

cp's OEIS Frontend

A230702 Number of (n+3)X(2+3) 0..2 white square subarrays x(i,j) with each element diagonally or antidiagonally next to at least one element with value (x(i,j)+1) mod 3, and upper left element zero.

Table of values

List of values