A252351 Number of (n+2)X(7+2) 0..3 arrays with every 3X3 subblock row and column sum not equal to 0 3 5 6 or 8 and every 3X3 diagonal and antidiagonal sum equal to 0 3 5 6 or 8

12670, 66229, 294801, 1312020, 9477253, 49182987, 249626459, 1786788265, 9363179389, 48251359131, 344793840705, 1802242635859, 9325197489623, 66803148741785, 348122496835947, 1803145412715731, 12973455904569109

Offset

1,1

Comments

Column 7 of A252352

Links

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

Example

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

Crossrefs

Sequence in context: A078957 A119076 A251099 * A251478 A159203 A254799

Adjacent sequences: A252348 A252349 A252350 * A252352 A252353 A252354

Keyword

nonn

Author

R. H. Hardin, Dec 16 2014

Status

approved