A252581 - cp's OEIS frontend

A252581 Number of (7+2)X(n+2) 0..3 arrays with every 3X3 subblock row and diagonal sum equal to 1 2 5 6 or 7 and every 3X3 column and antidiagonal sum not equal to 1 2 5 6 or 7.

n	a(n)
1	8279
2	39419
3	275252
4	802760
5	7115253
6	53055996
7	155864925
8	1380518004
9	10339904588
10	30371389585
11	268585630512
12	2020072809256
13	5932838682650
14	52395775636832
15	395480404508430
16	1161448118532776
17	10243694081474738

[8279, 39419, 275252, 802760, 7115253, 53055996, 155864925, 1380518004, 10339904588, 30371389585, 268585630512, 2020072809256, 5932838682650, 52395775636832, 395480404508430, 1161448118532776, 10243694081474738]

cp's OEIS Frontend

A252581 Number of (7+2)X(n+2) 0..3 arrays with every 3X3 subblock row and diagonal sum equal to 1 2 5 6 or 7 and every 3X3 column and antidiagonal sum not equal to 1 2 5 6 or 7.

Table of values

List of values