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A072042 a(n+2) = a(n+1)*a(n)*(1+1/n), a(1)=a(2)=1. 0
1, 1, 2, 3, 8, 30, 288, 10080, 3317760, 37623398400, 138694895861760000, 5739990655358858585702400000, 868480806755424464755519466250436608000000000 (list; graph; refs; listen; history; internal format)
OFFSET

1,3

MATHEMATICA

a[1] = a[2] = 1; a[n_] := a[n - 1]*a[n - 2]*(1 + 1/(n - 2)); Table[ a[n], {n, 1, 13}]

CROSSREFS

Sequence in context: A053556 A001048 A141520 * A160586 A162074 A162052

Adjacent sequences:  A072039 A072040 A072041 * A072043 A072044 A072045

KEYWORD

easy,nonn

AUTHOR

Benoit Cloitre (benoit7848c(AT)orange.fr), Jul 29 2002

EXTENSIONS

Edited by Robert G. Wilson v (rgwv(AT)rgwv.com), Jul 31 2002

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Last modified February 16 05:32 EST 2012. Contains 205860 sequences.