A252580 - cp's OEIS frontend

A252580 Number of (6+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	4583
2	17261
3	96099
4	263046
5	1887578
6	11285381
7	31059674
8	225598956
9	1361132361
10	3729210396
11	27362165487
12	166198069299
13	453536490301
14	3356182671339
15	20487487055456
16	55725146612802
17	415147146187485
18	2543940816582309

[4583, 17261, 96099, 263046, 1887578, 11285381, 31059674, 225598956, 1361132361, 3729210396, 27362165487, 166198069299, 453536490301, 3356182671339, 20487487055456, 55725146612802, 415147146187485, 2543940816582309]

cp's OEIS Frontend

A252580 Number of (6+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