A252033 Number of (n+2)X(1+2) 0..4 arrays with every 3X3 subblock row and column sum nonprime and every diagonal and antidiagonal sum prime

10991, 31774, 53776, 112929, 327823, 1080979, 2183207, 5486634, 16631787, 51672060, 114374144, 303612703, 922940376, 2704035839, 6383581782, 17609747682, 52579573030, 148181650270, 369603880321, 1038233037114

Offset

1,1

Comments

Column 1 of A252039

Links

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

Example

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

Crossrefs

Sequence in context: A335082 A104323 A252039 * A352751 A266983 A227865

Adjacent sequences: A252030 A252031 A252032 * A252034 A252035 A252036

Keyword

nonn

Author

R. H. Hardin, Dec 12 2014

Status

approved