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 A250944 Number of (2+1)X(n+1) 0..2 arrays with nondecreasing x(i,j)+x(i,j-1) in the i direction and nondecreasing absolute value of x(i,j)-x(i-1,j) in the j direction 1
 125, 699, 3355, 15431, 67595, 287045, 1188599, 4827913, 19308213, 76254749, 298049037, 1154930779, 4442888465, 16986179207, 64600876511, 244577899139, 922363567903, 3466733140929, 12991657380635, 48562243341429 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Row 2 of A250942 LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 FORMULA Empirical: a(n) = 10*a(n-1) -29*a(n-2) -6*a(n-3) +136*a(n-4) -90*a(n-5) -217*a(n-6) +186*a(n-7) +143*a(n-8) -124*a(n-9) -32*a(n-10) +24*a(n-11) EXAMPLE Some solutions for n=4 ..0..0..1..0..0....2..0..2..0..1....0..1..2..1..1....1..1..1..0..2 ..0..1..0..1..1....1..1..1..1..0....1..2..1..2..0....0..2..2..1..1 ..0..2..1..2..2....0..2..0..2..1....2..1..2..1..1....0..2..2..1..1 CROSSREFS Sequence in context: A045170 A235896 A250634 * A251288 A060093 A253345 Adjacent sequences: A250941 A250942 A250943 * A250945 A250946 A250947 KEYWORD nonn AUTHOR R. H. Hardin, Nov 28 2014 STATUS approved

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Last modified March 31 08:15 EDT 2023. Contains 361645 sequences. (Running on oeis4.)