A258999 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, vertically and ne-to-sw antidiagonally

512, 6271, 55760, 225215, 219424, 292814, 73734, 112980, 204210, 373950, 691648, 1293909, 2450704, 4696800, 9101720, 17813333, 35142090, 69765156, 139164158, 278562651, 558960096, 1123499142, 2260769566, 4552609547, 9172064656

Offset

1,1

Comments

Diagonal of A259006

Links

R. H. Hardin, Table of n, a(n) for n = 1..36

Example

Some solutions for n=3
..0..0..1..1..0....1..1..0..0..1....0..1..0..0..0....0..1..1..0..0
..0..1..0..1..1....0..0..0..0..1....0..0..0..0..1....1..0..0..1..1
..0..1..0..1..0....0..1..1..1..1....1..0..0..0..1....0..1..1..1..1
..1..1..1..1..0....1..1..1..1..1....0..0..1..1..0....1..1..1..1..1
..1..0..1..0..1....0..0..1..1..0....0..1..1..0..1....1..1..1..0..0

Crossrefs

Cf. A259006

Sequence in context: A017259 A017367 A254899 * A253833 A017487 A263034

Adjacent sequences: A258996 A258997 A258998 * A259000 A259001 A259002

Keyword

nonn

Author

R. H. Hardin, Jun 16 2015

Status

approved