A100009 - OEIS

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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

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OFFSET

1,1

COMMENTS

The next term has 90 digits.

LINKS

Table of n, a(n) for n=1..5.

CROSSREFS

Sequence in context: A375973 A066933 A132496 * A167218 A013045 A290864

Adjacent sequences: A100006 A100007 A100008 * A100010 A100011 A100012

KEYWORD

easy,nonn,less

AUTHOR

Jonathan Vos Post, Nov 16 2004

STATUS

approved