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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
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
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 12 2014
STATUS
approved

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Last modified March 29 04:59 EDT 2024. Contains 371264 sequences. (Running on oeis4.)