A252119 Number of (n+2)X(2+2) 0..3 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum less than 6

1091710, 83930022, 6987308056, 542424609174, 42424000928232, 3354373190670870, 264082244572771202, 20776853270332111512, 1636217390178243794314, 128835278036010926319248

Offset

1,1

Comments

Column 2 of A252121

Links

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

Example

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

Crossrefs

Sequence in context: A340405 A258704 A224592 * A109148 A077647 A172647

Adjacent sequences: A252116 A252117 A252118 * A252120 A252121 A252122

Keyword

nonn

Author

R. H. Hardin, Dec 14 2014

Status

approved