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Search: id:A130589
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| A130589 |
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a(n)=F(F(n)-1), where F(n)=A000045(n) (the Fibonacci numbers). |
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+0
1
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| 0, 0, 1, 1, 3, 13, 144, 6765, 3524578, 86267571272, 1100087778366101931, 343358302784187294870275058337, 1366619256256991435939546543402365995473880912459
(list; graph; listen)
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OFFSET
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1,5
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COMMENT
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F(F(n+1)=A007570(n+1), namely, 1,1,2,5,21,233,...
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EXAMPLE
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a(1)=F(F(1)-1)=F(0)=0;
a(2)=F(F(2)-1)=F(0)=0;
a(3)=F(F(3)-1)=F(1)=1;
a(4)=F(F(4)-1)=F(2)=1;
a(5)=F(F(5)-1)=F(4)=3;
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MAPLE
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with(combinat): a := proc (n) options operator, arrow; fibonacci(fibonacci(n)-1) end proc: seq(a(n), n = 1 .. 14);
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CROSSREFS
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Cf. A000045.
Cf. A007570.
Sequence in context: A057865 A121921 A054933 this_sequence A041591 A001150 A108554
Adjacent sequences: A130586 A130587 A130588 this_sequence A130590 A130591 A130592
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KEYWORD
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easy,nonn
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AUTHOR
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Philippe Lallouet (philip.lallouet(AT)wanadoo.fr), Jun 16 2007
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EXTENSIONS
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Edited by Emeric Deutsch (deutsch(AT)duke.poly.edu), Jul 10 2007
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