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A074723 Largest power of 2 dividing F(3n) where F(k) is the k-th Fibonacci number. +0
1
2, 8, 2, 16, 2, 8, 2, 32, 2, 8, 2, 16, 2, 8, 2, 64, 2, 8, 2, 16, 2, 8, 2, 32, 2, 8, 2, 16, 2, 8, 2, 128, 2, 8, 2, 16, 2, 8, 2, 32, 2, 8, 2, 16, 2, 8, 2, 64, 2, 8, 2, 16, 2, 8, 2, 32, 2, 8, 2, 16, 2, 8, 2, 256, 2, 8, 2, 16, 2, 8, 2, 32, 2, 8, 2, 16, 2, 8, 2, 64, 2, 8, 2, 16, 2, 8, 2, 32, 2, 8, 2 (list; graph; listen)
OFFSET

1,1

COMMENT

if m=1 or 2 (mod 3) F(m) is odd.

FORMULA

It appears that 4 never appears and : a(2k+1)=2 a(2^m*(2k+1))=2^(m+2) for k>=0 and m >=1.

CROSSREFS

Sequence in context: A010466 A086396 A098471 this_sequence A063077 A085192 A006085

Adjacent sequences: A074720 A074721 A074722 this_sequence A074724 A074725 A074726

KEYWORD

nonn

AUTHOR

Benoit Cloitre (benoit7848c(AT)orange.fr), Sep 04 2002

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Last modified December 17 19:39 EST 2009. Contains 170821 sequences.


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