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A100009
a(1) = 2; for n >= 2, a(n) = f(a(n-1)) where f(n) = n*(n+1)*(n+2)*(n+3)/24.
10
2, 5, 70, 1088430, 58478088289964410654020
OFFSET
1,1
COMMENTS
The next term has 90 digits.
CROSSREFS
Sequence in context: A375973 A066933 A132496 * A167218 A013045 A290864
KEYWORD
easy,nonn,less
AUTHOR
Jonathan Vos Post, Nov 16 2004
STATUS
approved