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 A251115 Number of (n+1)X(2+1) 0..3 arrays with nondecreasing maximum of every two consecutive values in every row and column 1
 2500, 64660, 1494029, 27945953, 480842776, 7521121248, 111353209662, 1565216316524, 21222352910300, 278794962294706, 3575143198989419, 44910526954802560, 554888528859073528, 6760076062454651486 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 2 of A251120 LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 EXAMPLE Some solutions for n=2 ..0..1..0....0..0..1....1..2..0....0..3..3....0..0..3....0..0..0....0..2..1 ..0..0..0....3..0..3....1..2..3....3..3..2....2..2..1....0..1..1....0..0..1 ..3..3..3....0..2..0....2..2..0....2..2..3....0..1..3....0..0..2....0..2..3 CROSSREFS Sequence in context: A253377 A253370 A204225 * A235439 A235404 A120408 Adjacent sequences: A251112 A251113 A251114 * A251116 A251117 A251118 KEYWORD nonn AUTHOR R. H. Hardin, Nov 30 2014 STATUS approved

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Last modified February 25 16:38 EST 2024. Contains 370332 sequences. (Running on oeis4.)