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 A252590 T(n,k)=Number of (n+2)X(k+2) 0..3 arrays with no row, column, diagonal or antidiagonal in any 3X3 subblock summing to 0 1 2 7 8 or 9 4
 13170, 139918, 139918, 1741670, 2932278, 1741670, 22094800, 78789896, 78789896, 22094800, 278456362, 2038097660, 4406719658, 2038097660, 278456362, 3517561890, 52624335712, 235079475068, 235079475068, 52624335712, 3517561890 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Table starts .......13170........139918........1741670.......22094800......278456362 ......139918.......2932278.......78789896.....2038097660....52624335712 .....1741670......78789896.....4406719658...235079475068.12835989195484 ....22094800....2038097660...235079475068.26484705476040 ...278456362...52624335712.12835989195484 ..3517561890.1370922407174 .44483332378 LINKS R. H. Hardin, Table of n, a(n) for n = 1..31 EXAMPLE Some solutions for n=1 k=4 ..1..2..2..2..2..2....1..1..1..1..2..3....1..2..2..1..3..2....1..2..2..2..1..3 ..1..1..1..2..1..0....1..1..1..2..2..2....1..1..1..2..2..2....1..1..1..1..1..2 ..1..3..1..2..2..2....1..1..1..1..1..1....1..3..1..2..0..1....1..3..1..1..2..1 CROSSREFS Sequence in context: A252156 A102331 A064252 * A252587 A235967 A184001 Adjacent sequences:  A252587 A252588 A252589 * A252591 A252592 A252593 KEYWORD nonn,tabl AUTHOR R. H. Hardin, Dec 18 2014 STATUS approved

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Last modified April 12 16:28 EDT 2021. Contains 342929 sequences. (Running on oeis4.)