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A126452 Column 1 of triangle A126450; a(n) = C( C(n+3,3), n). 6
1, 4, 45, 1140, 52360, 3819816, 406481544, 59487568920, 11468588169060, 2818651865383860, 860587163078645431, 319667046321630491484, 141992594868360194121800, 74339194732961502662043600 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,2
LINKS
MATHEMATICA
Table[Binomial[Binomial[n+3, 3], n], {n, 0, 20}] (* Harvey P. Dale, Oct 09 2014 *)
PROG
(PARI) a(n)=binomial((n+1)*(n+2)*(n+3)/3!, n)
CROSSREFS
Sequence in context: A276292 A174484 A158887 * A082765 A132873 A244753
KEYWORD
nonn
AUTHOR
Paul D. Hanna, Dec 27 2006
STATUS
approved

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Last modified May 29 05:33 EDT 2024. Contains 372921 sequences. (Running on oeis4.)