A251818 Number of (n+2)X(7+2) 0..2 arrays with every row, column, diagonal or antidiagonal in each 3X3 subblock summing to a prime.

6066, 24411, 213857, 1741500, 14105237, 115183429, 937980816, 7634089673, 62282795883, 507708323914, 4135550418801, 33696297343365, 274629581667564, 2238121992115381, 18238035152919884, 148617809035822028

Offset

1,1

Comments

Column 7 of A251819

Links

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

Example

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

Crossrefs

Sequence in context: A283932 A209552 A238042 * A241244 A241245 A260105

Adjacent sequences: A251815 A251816 A251817 * A251819 A251820 A251821

Keyword

nonn

Author

R. H. Hardin, Dec 09 2014

Status

approved