A252567 - cp's OEIS frontend

A252567 Number of (n+2)X(1+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	702
2	742
3	890
4	1469
5	2637
6	4583
7	8279
8	15476
9	28007
10	51488
11	96898
12	176973
13	326583
14	615240
15	1126387
16	2079411
17	3916443
18	7178360
19	13247301
20	24939892
21	45753026
22	84395129
23	158816016
24	291599929
25	537626773
26	1011287507
27	1858330859
28	3424706510

[702, 742, 890, 1469, 2637, 4583, 8279, 15476, 28007, 51488, 96898, 176973, 326583, 615240, 1126387, 2079411, 3916443, 7178360, 13247301, 24939892, 45753026, 84395129, 158816016, 291599929, 537626773, 1011287507, 1858330859, 3424706510]

cp's OEIS Frontend

A252567 Number of (n+2)X(1+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