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Search: id:A072042
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| A072042 |
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a(n+2) = a(n+1)*a(n)*(1+1/n), a(1)=a(2)=1. |
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+0
1
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| 1, 1, 2, 3, 8, 30, 288, 10080, 3317760, 37623398400, 138694895861760000, 5739990655358858585702400000, 868480806755424464755519466250436608000000000
(list; graph; listen)
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OFFSET
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1,3
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MATHEMATICA
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a[1] = a[2] = 1; a[n_] := a[n - 1]*a[n - 2]*(1 + 1/(n - 2)); Table[ a[n], {n, 1, 13}]
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CROSSREFS
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Sequence in context: A053556 A001048 A141520 this_sequence A162074 A162052 A082569
Adjacent sequences: A072039 A072040 A072041 this_sequence A072043 A072044 A072045
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KEYWORD
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easy,nonn
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AUTHOR
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Benoit Cloitre (benoit7848c(AT)orange.fr), Jul 29 2002
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EXTENSIONS
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Edited by Robert G. Wilson v (rgwv(AT)rgwv.com), Jul 31 2002
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