A252587 Number of (n+2)X(1+2) 0..3 arrays with no row, column, diagonal or antidiagonal in any 3X3 subblock summing to 0 1 2 7 8 or 9

13170, 139918, 1741670, 22094800, 278456362, 3517561890, 44483332378, 562542584596, 7113728991186, 89959705046532, 1137631021088014, 14386487475717882, 181931584022864112, 2300708140965333052

Offset

1,1

Comments

Column 1 of A252590

Links

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

Example

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

Crossrefs

Sequence in context: A102331 A064252 A252590 * A346904 A235967 A184001

Adjacent sequences: A252584 A252585 A252586 * A252588 A252589 A252590

Keyword

nonn

Author

R. H. Hardin, Dec 18 2014

Status

approved