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 A121277 Row sums of triangle A062993. 1
 1, 2, 4, 10, 32, 126, 588, 3171, 19382, 132099, 990756, 8093603, 71436060, 676734190, 6842383982, 73483900031, 834766518890, 9994386677811, 125715770020804, 1656716763283342, 22816308485104494, 327646842078735037, 4896100535018809108, 75994281001001114847 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 LINKS Alois P. Heinz, Table of n, a(n) for n = 0..200 FORMULA a(n) = Sum_{k=0..n} A062993(n,k). MAPLE b:= (n, k)-> binomial((k+2)*(n-k), n-k) /((k+1) *(n-k)+1): a:= n-> add (b(n, k), k=0..n): seq (a(n), n=0..25);  # Alois P. Heinz, Apr 07 2011 CROSSREFS Sequence in context: A001250 A013032 A098830 * A009284 A105557 A166741 Adjacent sequences:  A121274 A121275 A121276 * A121278 A121279 A121280 KEYWORD nonn AUTHOR Philippe Deléham, Aug 23 2006 EXTENSIONS More terms from Alois P. Heinz, Apr 07 2011 STATUS approved

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Last modified October 29 20:41 EDT 2020. Contains 338073 sequences. (Running on oeis4.)