A252590 T(n,k)=Number of (n+2)X(k+2) 0..3 arrays with no row, column, diagonal or antidiagonal in any 3X3 subblock summing to 0 1 2 7 8 or 9.

13170, 139918, 139918, 1741670, 2932278, 1741670, 22094800, 78789896, 78789896, 22094800, 278456362, 2038097660, 4406719658, 2038097660, 278456362, 3517561890, 52624335712, 235079475068, 235079475068, 52624335712, 3517561890

Offset

1,1

Comments

Table starts

.......13170........139918........1741670.......22094800......278456362

......139918.......2932278.......78789896.....2038097660....52624335712

.....1741670......78789896.....4406719658...235079475068.12835989195484

....22094800....2038097660...235079475068.26484705476040

...278456362...52624335712.12835989195484

..3517561890.1370922407174

.44483332378

Links

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

Example

Some solutions for n=1 k=4
..1..2..2..2..2..2....1..1..1..1..2..3....1..2..2..1..3..2....1..2..2..2..1..3
..1..1..1..2..1..0....1..1..1..2..2..2....1..1..1..2..2..2....1..1..1..1..1..2
..1..3..1..2..2..2....1..1..1..1..1..1....1..3..1..2..0..1....1..3..1..1..2..1

Crossrefs

Sequence in context: A252156 A102331 A064252 * A252587 A346904 A235967

Adjacent sequences: A252587 A252588 A252589 * A252591 A252592 A252593

Keyword

nonn,tabl

Author

R. H. Hardin, Dec 18 2014

Status

approved