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 A250436 Number of (n+1)X(n+1) 0..2 arrays with nondecreasing sum of every two consecutive values in every row and column 0
 81, 2160, 160000, 8750000, 937890625, 74118870000, 9682651996416, 958582547645184, 141763707879526656, 16346105372357849088, 2632478657451209588736, 338880211548064890612480 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Diagonal of A250443 LINKS Table of n, a(n) for n=1..12. EXAMPLE Some solutions for n=3 ..0..1..1..1....0..1..1..1....0..0..0..1....0..0..1..0....0..0..1..2 ..0..0..0..0....0..0..0..0....0..0..0..1....0..2..0..2....0..0..1..0 ..0..1..2..2....0..1..1..1....0..2..0..2....2..0..2..1....0..2..1..2 ..0..0..2..0....1..0..2..0....0..1..2..1....1..2..1..2....1..0..2..2 CROSSREFS Sequence in context: A296577 A237316 A237722 * A237545 A253399 A236820 Adjacent sequences: A250433 A250434 A250435 * A250437 A250438 A250439 KEYWORD nonn AUTHOR R. H. Hardin, Nov 22 2014 STATUS approved

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Last modified August 9 13:53 EDT 2024. Contains 375042 sequences. (Running on oeis4.)