A252526 - cp's OEIS frontend

A252526 Number of (n+2) X (2+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	730
2	337
3	334
4	426
5	676
6	964
7	1344
8	2312
9	3336
10	4800
11	8464
12	12304
13	18048
14	32288
15	47136
16	69888
17	126016
18	184384
19	274944
20	497792
21	729216
22	1090560
23	1978624
24	2900224
25	4343808
26	7889408
27	11567616
28	17338368
29	31507456
30	46203904
31	69279744
32	125929472

[730, 337, 334, 426, 676, 964, 1344, 2312, 3336, 4800, 8464, 12304, 18048, 32288, 47136, 69888, 126016, 184384, 274944, 497792, 729216, 1090560, 1978624, 2900224, 4343808, 7889408, 11567616, 17338368, 31507456, 46203904, 69279744, 125929472]

cp's OEIS Frontend

A252526 Number of (n+2) X (2+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