A252539 - cp's OEIS frontend

A252539 Number of (7+2) X (n+2) 0..3 arrays with every 3 X 3 subblock row and diagonal sum equal to 0 2 3 6 or 7 and every 3 X 3 column and antidiagonal sum not equal to 0 2 3 6 or 7.

n	a(n)
1	823
2	1344
3	2332
4	3160
5	10720
6	18656
7	25280
8	85760
9	149248
10	202240
11	686080
12	1193984
13	1617920
14	5488640
15	9551872
16	12943360
17	43909120
18	76414976
19	103546880
20	351272960
21	611319808
22	828375040
23	2810183680
24	4890558464
25	6627000320
26	22481469440

[823, 1344, 2332, 3160, 10720, 18656, 25280, 85760, 149248, 202240, 686080, 1193984, 1617920, 5488640, 9551872, 12943360, 43909120, 76414976, 103546880, 351272960, 611319808, 828375040, 2810183680, 4890558464, 6627000320, 22481469440]

cp's OEIS Frontend

A252539 Number of (7+2) X (n+2) 0..3 arrays with every 3 X 3 subblock row and diagonal sum equal to 0 2 3 6 or 7 and every 3 X 3 column and antidiagonal sum not equal to 0 2 3 6 or 7.

Table of values

List of values