A230739 - cp's OEIS frontend

A230739 T(n,k)=Number of (n+3)X(k+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	2
2	8
3	8
4	30
5	66
6	30
7	102
8	244
9	244
10	102
11	348
12	2016
13	2106
14	2016
15	348
16	1172
17	6576
18	16536
19	16536
20	6576
21	1172
22	3956
23	54138
24	130446
25	320970
26	130446
27	54138
28	3956
29	13326
30	173428
31	1025430
32	2382398
33	2382398
34	1025430
35	173428
36	13326
37	44916
38	1427040
39	8053490

[2, 8, 8, 30, 66, 30, 102, 244, 244, 102, 348, 2016, 2106, 2016, 348, 1172, 6576, 16536, 16536, 6576, 1172, 3956, 54138, 130446, 320970, 130446, 54138, 3956, 13326, 173428, 1025430, 2382398, 2382398, 1025430, 173428, 13326, 44916, 1427040, 8053490]

cp's OEIS Frontend

A230739 T(n,k)=Number of (n+3)X(k+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