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Search: id:A072876
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| A072876 |
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Like a Somos-4 sequence with a(n-2)^3 in place of a(n-2)^2 : a(1)=a(2)=a(3)=a(4)=1; a(n)=(a(n-1)a(n-3)+a(n-2)^3)/a(n-4). |
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+0
2
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| 1, 1, 1, 1, 2, 3, 11, 49, 739, 41926, 36876163, 1504578225617, 67856786028033600651, 81238311359334144709516343054051, 8472940010945536421401513734595877223414710434640386
(list; graph; listen)
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OFFSET
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1,5
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FORMULA
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The limit of (log(log a(n)))/n as n tends to infinity is log((1+sqrt(5))/2) or about 0.48. However, convergence is extremely slow. - Andrew Hone (anwh(AT)kent.ac.uk), Nov 15 2005
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CROSSREFS
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Cf. A006720.
Sequence in context: A041345 A100701 A011365 this_sequence A020133 A086528 A152024
Adjacent sequences: A072873 A072874 A072875 this_sequence A072877 A072878 A072879
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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 28 2002
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