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 A251922 Number of (n+2)X(7+2) 0..3 arrays with every 3X3 subblock row and column sum 2 4 5 or 7 and every diagonal and antidiagonal sum not 2 4 5 or 7 1
 12872, 34396, 153792, 856022, 5742474, 36065236, 249690188, 1610617806, 11148308670, 71796251804, 499209800968, 3217851653774, 22340736113682, 143989452210488, 1000381251221086, 6447937099979436, 44784252890865612 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 7 of A251923 LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 EXAMPLE Some solutions for n=3 ..0..2..0..2..3..2..0..2..0....0..1..3..1..3..1..0..1..3 ..2..0..2..0..2..0..2..3..2....1..3..1..0..1..3..1..3..1 ..0..2..0..2..0..2..0..2..0....3..1..0..1..3..1..3..1..3 ..2..3..2..0..2..3..2..0..2....1..3..1..3..1..0..1..3..1 ..0..2..3..2..0..2..0..2..0....3..1..3..1..3..1..0..1..3 CROSSREFS Sequence in context: A031805 A244171 A245793 * A184453 A233936 A360836 Adjacent sequences: A251919 A251920 A251921 * A251923 A251924 A251925 KEYWORD nonn AUTHOR R. H. Hardin, Dec 11 2014 STATUS approved

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Last modified March 25 03:37 EDT 2023. Contains 361511 sequences. (Running on oeis4.)