A251879 Number of (n+2)X(2+2) 0..4 arrays with every 3X3 subblock row and column sum prime and every diagonal and antidiagonal sum nonprime

11492, 16857, 36085, 100787, 242531, 725325, 2472269, 6408131, 19769560, 78452511, 212230688, 666265060, 2912844580, 8061613986, 25541729546, 117108085594, 327465960182, 1041920747781, 4874382846428, 13688187308337

Offset

1,1

Comments

Column 2 of A251885

Links

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

Example

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

Crossrefs

Sequence in context: A349746 A100972 A293371 * A201048 A236522 A235659

Adjacent sequences: A251876 A251877 A251878 * A251880 A251881 A251882

Keyword

nonn

Author

R. H. Hardin, Dec 10 2014

Status

approved