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 A252908 Number of (n+2)X(4+2) 0..3 arrays with every consecutive three elements in every row and column having exactly 2 distinct values, in every diagonal 1 or 2 distinct values, in every antidiagonal 2 or 3 distinct values, and new values 0 upwards introduced in row major order 1
 28642, 288263, 3321526, 42339952, 551697392, 7249491353, 95923903361, 1272678322381, 16901116361226, 224686312253900, 2988072728793976, 39740979216112866, 528686297511992065, 7033465700071654332 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 4 of A252910 LINKS R. H. Hardin, Table of n, a(n) for n = 1..38 EXAMPLE Some solutions for n=1 ..0..1..1..2..1..1....0..1..0..0..1..0....0..1..0..0..2..2....0..0..1..0..1..0 ..3..3..1..1..3..1....1..2..1..1..2..2....2..0..2..0..0..2....0..2..2..0..0..3 ..3..1..3..1..1..3....1..1..0..0..1..0....2..1..2..2..0..0....2..0..2..2..0..0 CROSSREFS Sequence in context: A256841 A234828 A263116 * A179251 A122650 A172755 Adjacent sequences:  A252905 A252906 A252907 * A252909 A252910 A252911 KEYWORD nonn AUTHOR R. H. Hardin, Dec 24 2014 STATUS approved

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Last modified August 18 14:30 EDT 2018. Contains 313832 sequences. (Running on oeis4.)