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 A096816 Row sums of triangle A096815, in which A096815(n,k) equals the k-th term of the convolution of the two prior rows indexed by (n-k) and k. 5
 1, 2, 3, 5, 9, 15, 26, 44, 75, 129, 220, 378, 648, 1114, 1910, 3284, 5635, 9677, 16608, 28501, 48930, 83973, 144150, 247396, 424612, 728577, 1250185, 2144858, 3679772, 6313029, 10830673, 18581706, 31880471, 54698330, 93847987, 161021223 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 LINKS MATHEMATICA T[n_, k_] := T[n, k] = If[n < k || k < 0, 0, If[k = 1 || k == n, 1, Sum[T[n-k, j]T[k, k-j], {j, 0, k}]]] Table[Sum[T[n, k], {k, 0, n}], {n, 0, 50}] [Emanuele Munarini, May 16 2012] PROG (Maxima) T(n, k):= if ( n

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Last modified November 24 04:08 EST 2020. Contains 338607 sequences. (Running on oeis4.)