A252579 - cp's OEIS frontend

A252579 Number of (5+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	2637
2	7610
3	34532
4	88844
5	498696
6	2538669
7	6590930
8	37656158
9	199331443
10	514906002
11	2994563004
12	16370844276
13	42106677118
14	248304737187
15	1390789570131
16	3565907298743
17	21240150477364
18	121018033333627
19	309607017470686

[2637, 7610, 34532, 88844, 498696, 2538669, 6590930, 37656158, 199331443, 514906002, 2994563004, 16370844276, 42106677118, 248304737187, 1390789570131, 3565907298743, 21240150477364, 121018033333627, 309607017470686]

cp's OEIS Frontend

A252579 Number of (5+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