A254015 Number of (n+2)X(3+2) 0..1 arrays with every 3X3 subblock diagonal sum plus antidiagonal median nondecreasing horizontally, vertically and ne-to-sw antidiagonally

9560, 23295, 89310, 313324, 642050, 1467412, 3051110, 6150750, 12535008, 24511673, 47478906, 91909111, 176229414, 338003157, 647856048, 1235057964, 2357121456, 4491480029, 8545833444, 16251001791, 30861280586, 58568037459

Offset

1,1

Comments

Column 3 of A254020

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

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

Crossrefs

Sequence in context: A223367 A136476 A136479 * A254022 A254889 A133449

Adjacent sequences: A254012 A254013 A254014 * A254016 A254017 A254018

Keyword

nonn

Author

R. H. Hardin, Jan 22 2015

Status

approved