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A233837
Number of (n+2)X(n+2) 0..3 arrays with no increasing sequence of length 3 horizontally or antidiagonally downwards
1
201664, 1909001345, 220722832237568, 309991751661980537856, 5282676168847397906091279616, 1092733829722948057628861796014602753, 2743515983406193863098184416154650757282395648
OFFSET
1,1
COMMENTS
Diagonal of A233845
LINKS
EXAMPLE
Some solutions for n=1
..0..3..3....0..3..0....1..2..0....2..0..1....1..1..3....1..3..2....1..0..1
..1..3..3....0..3..1....0..1..1....0..3..1....1..0..3....1..0..1....0..2..1
..2..2..1....2..3..2....1..2..0....0..3..2....3..2..0....0..3..1....0..3..3
CROSSREFS
Sequence in context: A233845 A233846 A233838 * A252498 A355332 A274815
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 16 2013
STATUS
approved