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A126458 Column 0 of triangle A126457; a(n) = C( C(n+2,3) + 3, n). 5
1, 4, 21, 286, 8855, 501942, 45057474, 5843355957, 1029873432159, 236236542585120, 68292983465630781, 24268885951464043344, 10392619362579990298763, 5276256293478688846049120 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,2
LINKS
PROG
(PARI) a(n)=binomial(n*(n+1)*(n+2)/3!+3, n)
CROSSREFS
Sequence in context: A324954 A198050 A270482 * A319363 A270586 A048164
KEYWORD
nonn
AUTHOR
Paul D. Hanna, Dec 27 2006
STATUS
approved

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Last modified March 29 07:27 EDT 2024. Contains 371265 sequences. (Running on oeis4.)