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 A252914 Number of (n+2)X(2+2) 0..3 arrays with every consecutive three elements in every row having 2 or 3 distinct values, in every column 1 or 2 distinct values, in every diagonal 2 distinct values, and in every antidiagonal 2 distinct values, and new values 0 upwards introduced in row major order 1
 8151, 52962, 418853, 3590945, 31484714, 273765237, 2405660944, 21164695786, 186324939058, 1640640634361, 14450504045197, 127278770331292, 1121132081874962, 9875584505122042, 86991091605489586, 766280168473793192 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 2 of A252917 LINKS R. H. Hardin, Table of n, a(n) for n = 1..110 EXAMPLE Some solutions for n=2 ..0..1..0..1....0..1..1..2....0..1..2..1....0..1..2..0....0..1..1..2 ..2..1..1..2....0..1..1..3....1..0..1..1....1..0..1..0....0..1..1..0 ..0..2..1..2....2..1..1..3....0..0..1..0....0..1..1..2....0..1..1..0 ..2..1..3..0....2..1..0..2....0..0..1..1....0..0..3..0....2..0..1..2 CROSSREFS Sequence in context: A233814 A190835 A013689 * A230785 A109145 A226001 Adjacent sequences:  A252911 A252912 A252913 * A252915 A252916 A252917 KEYWORD nonn AUTHOR R. H. Hardin, Dec 24 2014 STATUS approved

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Last modified January 23 07:07 EST 2020. Contains 331168 sequences. (Running on oeis4.)