A252325 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 3 or 6

12726, 94578, 94578, 723110, 797008, 723110, 5618854, 7391236, 7391236, 5618854, 44203794, 70847984, 96651850, 70847984, 44203794, 348767254, 727750076, 1374911658, 1374911658, 727750076, 348767254, 2755444362, 7593834452

Offset

1,1

Comments

Table starts

.......12726.......94578.......723110......5618854.....44203794......348767254

.......94578......797008......7391236.....70847984....727750076.....7593834452

......723110.....7391236.....96651850...1374911658..21966758822...361804339326

.....5618854....70847984...1374911658..32293301118.855441764490.23377332622310

....44203794...727750076..21966758822.855441764490

...348767254..7593834452.361804339326

..2755444362.79675585116

.21800265534

Links

R. H. Hardin, Table of n, a(n) for n = 1..40

Example

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

Crossrefs

Sequence in context: A288355 A163573 A236882 * A252322 A254507 A254514

Adjacent sequences: A252322 A252323 A252324 * A252326 A252327 A252328

Keyword

nonn,tabl

Author

R. H. Hardin, Dec 16 2014

Status

approved