A258518 - OEIS

A258518

Number of (n+2)X(n+2) 0..1 arrays with every 3X3 subblock sum of the two sums of the diagonal and antidiagonal minus the two sums of the central column and central row nondecreasing horizontally and vertically

512, 7334, 19920, 18282, 4028, 1256, 520, 424, 312, 252, 228, 192, 188, 176, 188, 192, 188, 192, 172, 192, 188, 192, 188, 176, 188, 192, 188, 192, 172, 192, 188, 192, 188, 176, 188, 192, 188, 192, 172, 192, 188, 192, 188, 176, 188, 192, 188, 192, 172, 192, 188, 192

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OFFSET

1,1

COMMENTS

Diagonal of A258522

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..68

EXAMPLE

Some solutions for n=4

..0..1..0..0..0..0....0..1..1..0..0..1....0..1..0..0..0..1....1..1..0..0..0..0

..0..1..1..0..0..1....0..1..1..1..1..1....1..1..1..1..1..0....1..1..0..1..0..0

..0..1..1..0..0..1....0..1..1..1..0..0....1..0..1..1..1..0....0..1..1..1..0..0