A256896 - OEIS

A256896

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

512, 9072, 202462, 2212280, 7212370, 20148566, 20860406, 59078346, 184212024, 632179718, 2314423502, 8727557690, 33524570530, 130212627960, 509112768360, 1998206331062, 7859885695566, 30956159700748, 122020341570654

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

Diagonal of A256904

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..31

EXAMPLE

Some solutions for n=2

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

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

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