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A059229 A diagonal of triangle defined in A059226. 2
0, 2, 12, 70, 426, 2708, 17846, 121014, 839388, 5929162, 42509318, 308561388, 2263197114, 16748071210, 124893822012, 937612685502, 7080464093282, 53748285892004, 409909445733950, 3139241855256334, 24132284421690988 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
LINKS
MATHEMATICA
T[i_, j_]:= T[i, j] = Module[{r, s, t1}, If[i == 0 && j == 0, Return[1]]; If[j == 0, Return[0]]; t1 = T[i, j - 1]; For[r = 0, r <= i - j, r++,
For[s = 0, s <= j, s++, If[r + s != i, t1 = t1 + T[r + s, s]]]]; Return[t1]]; Table[T[n, n - 1], {n, 1, 25}] (* G. C. Greubel, Jan 03 2017 *)
CROSSREFS
Sequence in context: A026306 A116398 A001542 * A001251 A143357 A357831
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Jan 19 2001
STATUS
approved

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Last modified March 29 03:51 EDT 2024. Contains 371264 sequences. (Running on oeis4.)