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 A250593 Number of (n+2)X(n+2) 0..2 arrays with nondecreasing sum of every three consecutive values in every row and column 1
 19683, 2099520, 622080000, 512000000000, 175000000000000, 117236328125000000, 153936794281005859375, 95375119619390625000000, 97682483345284168128000000, 165381614442044595841154678784 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Diagonal of A250601 LINKS R. H. Hardin, Table of n, a(n) for n = 1..12 EXAMPLE Some solutions for n=1 ..1..0..1....2..2..2....1..0..2....2..1..1....1..2..0....1..0..2....0..1..0 ..2..2..1....0..2..2....0..0..2....2..0..0....2..2..1....2..0..1....2..0..2 ..2..1..1....2..2..0....0..0..1....0..0..0....1..0..2....0..2..0....0..1..0 CROSSREFS Sequence in context: A250459 A250455 A016761 * A016773 A016845 A016893 Adjacent sequences: A250590 A250591 A250592 * A250594 A250595 A250596 KEYWORD nonn AUTHOR R. H. Hardin, Nov 25 2014 STATUS approved

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Last modified June 16 08:45 EDT 2024. Contains 373424 sequences. (Running on oeis4.)