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A083662
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a(n)=a([n/2])+a([n/4]), n>0. a(0)=1.
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8
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1, 2, 3, 3, 5, 5, 5, 5, 8, 8, 8, 8, 8, 8, 8, 8, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,2
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COMMENTS
| A000045(n+2)=a(A131577(n))and A000045(m+2)<a(m) for m < A131577(n). [From Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Sep 26 2009]
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LINKS
| R. Zumkeller, Table of n, a(n) for n = 0..10000 [From Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Sep 26 2009]
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FORMULA
| For n>0, a(n) = F([log(n)/log(2)]+3) where F(k) denotes the k-th Fibonacci number. For n>=3, F(n) appears 2^(n-3) times. More generally, if p is an integer>1 and a(n)=a([n/p])+a([n/p^2]), n>0, a(0)=1, then for n>0, a(n) = F([log(n)/log(p)]+3).
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PROG
| (PARI) a(n)=if(n<1, n==0, a(n\2)+a(n\4))
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CROSSREFS
| Cf. A088468.
A007731, A165704, A165706. [From Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Sep 26 2009]
Sequence in context: A131922 A113730 A154404 * A130149 A053046 A066658
Adjacent sequences: A083659 A083660 A083661 * A083663 A083664 A083665
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KEYWORD
| nonn
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AUTHOR
| Benoit Cloitre (benoit7848c(AT)orange.fr), Oct 05 2003
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