login
A126448
Column 2 of triangle A126445; a(n) = C( C(n+4,3) - 4, n).
4
1, 6, 120, 4495, 270725, 24040016, 2967205528, 487444845680, 103073959989495, 27319423696620550, 8881600973913295056, 3478625214672347911080, 1616770762998304775695925, 880246034121663208464847200
OFFSET
0,2
PROG
(PARI) a(n)=binomial((n+2)*(n+3)*(n+4)/3!-4, n)
CROSSREFS
KEYWORD
nonn
AUTHOR
Paul D. Hanna, Dec 27 2006
STATUS
approved