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 A252399 Number of (n+2)X(n+2) 0..3 arrays with every 3X3 subblock row and diagonal sum equal to 2 3 4 6 or 7 and every 3X3 column and antidiagonal sum not equal to 2 3 4 6 or 7 0
 458, 442, 1515, 6231, 73925, 1068295, 8765249, 335814585, 13694498100, 187357176355, 23527700483260, 2773482863248050, 59943048895785363, 25273086428741548965, 8681532608051019527627, 286961563672031753409771 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Diagonal of A252407 LINKS EXAMPLE Some solutions for n=4 ..0..2..2..3..2..2....3..2..2..3..2..2....3..3..1..0..3..1....3..2..2..0..2..2 ..3..1..3..3..1..3....3..1..3..3..1..3....3..2..2..3..2..2....2..3..2..2..3..2 ..2..2..3..2..2..0....2..2..3..2..2..3....2..3..2..2..3..2....0..3..1..3..0..1 ..3..2..2..0..2..2....3..2..2..0..2..2....3..0..1..3..3..1....3..2..2..3..2..2 ..0..1..3..3..1..3....3..1..3..3..1..3....3..2..2..0..2..2....2..0..2..2..3..2 ..2..2..3..2..2..3....2..2..0..2..2..3....2..3..2..2..3..2....3..3..1..3..3..1 CROSSREFS Sequence in context: A093058 A201257 A252400 * A341186 A252407 A252408 Adjacent sequences: A252396 A252397 A252398 * A252400 A252401 A252402 KEYWORD nonn AUTHOR R. H. Hardin, Dec 17 2014 STATUS approved

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Last modified March 28 21:03 EDT 2023. Contains 361596 sequences. (Running on oeis4.)