A251987 Number of (n+2)X(3+2) 0..2 arrays with no row, column, diagonal or antidiagonal in any 3X3 subblock summing to 1 or 5

151635, 3069283, 79998655, 2351304453, 73509019463, 2356741934027, 76367982838785, 2486060084557113, 81089162155711113, 2647147433243287759, 86447154825290659289, 2823522712519398894329, 92227692059938448409267

Offset

1,1

Comments

Column 3 of A251989

Links

R. H. Hardin, Table of n, a(n) for n = 1..127

Example

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

Crossrefs

Sequence in context: A344941 A334005 A367841 * A205662 A205951 A205462

Adjacent sequences: A251984 A251985 A251986 * A251988 A251989 A251990

Keyword

nonn

Author

R. H. Hardin, Dec 12 2014

Status

approved