A252622 Number of (7+2)X(n+2) 0..3 arrays with every 3X3 subblock row and diagonal sum equal to 0 3 5 6 or 8 and every 3X3 column and antidiagonal sum not equal to 0 3 5 6 or 8

9927, 75859, 342559, 1597203, 11003134, 51303874, 264208755, 1700337789, 7930822332, 41993076275, 265748176256, 1237282428489, 6597940218231, 41627282814007, 193554922117798, 1034078382568668, 6523826189348209

Offset

1,1

Comments

Row 7 of A252615

Links

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

Example

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

Crossrefs

Sequence in context: A145381 A212401 A252227 * A031856 A252573 A266917

Adjacent sequences: A252619 A252620 A252621 * A252623 A252624 A252625

Keyword

nonn

Author

R. H. Hardin, Dec 19 2014

Status

approved