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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 1
151635, 3069283, 79998655, 2351304453, 73509019463, 2356741934027, 76367982838785, 2486060084557113, 81089162155711113, 2647147433243287759, 86447154825290659289, 2823522712519398894329, 92227692059938448409267 (list; graph; refs; listen; history; text; internal format)
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: A262195 A138264 A246285 * A205662 A205951 A205462

Adjacent sequences:  A251984 A251985 A251986 * A251988 A251989 A251990

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 12 2014

STATUS

approved

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Last modified November 14 19:57 EST 2019. Contains 329128 sequences. (Running on oeis4.)