A252443 Number of (n+2)X(3+2) 0..2 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum less than 3

9062, 131202, 2091042, 30491181, 454665875, 6833055569, 102043139454, 1526189064960, 22840267867281, 341629869985739, 5110403797875856, 76451550737884426, 1143662281602106798, 17108429658444615062

Offset

1,1

Comments

Column 3 of A252447

Links

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

Example

Some solutions for n=2
..0..1..0..1..0....1..0..0..0..0....0..0..0..0..0....1..0..1..0..0
..0..0..0..0..1....0..0..1..0..0....0..0..0..1..0....0..1..1..0..0
..1..1..0..1..1....0..0..1..1..0....0..1..0..0..1....0..0..0..0..0
..1..1..0..1..0....1..0..0..0..0....0..1..0..0..1....1..1..0..1..1

Crossrefs

Sequence in context: A204535 A345389 A202914 * A061135 A118700 A234339

Adjacent sequences: A252440 A252441 A252442 * A252444 A252445 A252446

Keyword

nonn

Author

R. H. Hardin, Dec 17 2014

Status

approved