A230736 - cp's OEIS frontend

A230736 Number of (n+3)X(2+3) 0..2 black 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	66
3	244
4	2016
5	6576
6	54138
7	173428
8	1427040
9	4558536
10	37506738
11	119758148
12	985334832
13	3145930352
14	25883741898
15	82639468964
16	679931791152
17	2170826159272
18	17860880147874
19	57024624645332
20	469180811419968
21	1497958570841456

[8, 66, 244, 2016, 6576, 54138, 173428, 1427040, 4558536, 37506738, 119758148, 985334832, 3145930352, 25883741898, 82639468964, 679931791152, 2170826159272, 17860880147874, 57024624645332, 469180811419968, 1497958570841456]

cp's OEIS Frontend

A230736 Number of (n+3)X(2+3) 0..2 black 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