A251817 Number of (n+2)X(6+2) 0..2 arrays with every row, column, diagonal or antidiagonal in each 3X3 subblock summing to a prime.

3349, 9040, 62457, 409196, 2670355, 17562309, 115183429, 755607816, 4967204967, 32613907072, 214022771740, 1405186467947, 9227158423777, 60580408167779, 397722666715162, 2611240940819645, 17144272724693792, 112560751779945326

Offset

1,1

Comments

Column 6 of A251819

Links

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

R. H. Hardin, Empirical recurrence of order 74

Formula

Empirical recurrence of order 74 (see link above)

Example

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

Crossrefs

Sequence in context: A204884 A204880 A151601 * A216488 A203782 A206978

Adjacent sequences: A251814 A251815 A251816 * A251818 A251819 A251820

Keyword

nonn

Author

R. H. Hardin, Dec 09 2014

Status

approved