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Search: id:A118736
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A118736 Number of zeros in binary expansion of 3^n. +0
1
0, 0, 2, 1, 4, 2, 4, 7, 7, 7, 7, 5, 10, 10, 9, 9, 15, 13, 15, 14, 15, 14, 16, 15, 23, 22, 18, 13, 20, 21, 23, 24, 25, 19, 25, 24, 31, 25, 25, 30, 36, 26, 29, 30, 36, 38, 28, 37, 36, 45, 39, 35, 41, 50, 47, 46, 50, 51, 50, 46, 40, 41, 50, 43, 46, 53, 60, 60, 53, 55, 47, 45, 57, 58 (list; graph; listen)
OFFSET

0,3

MATHEMATICA

f[n_] := DigitCount[3^n, 2, 0]; Table[f[n], {n, 0, 73}] (*Chandler*)

CROSSREFS

Cf. A011754 Number of ones in binary expansion of 3^n.

Sequence in context: A070556 A065295 A035685 this_sequence A105474 A120988 A095979

Adjacent sequences: A118733 A118734 A118735 this_sequence A118737 A118738 A118739

KEYWORD

base,nonn

AUTHOR

Zak Seidov (zakseidov(AT)yahoo.com), May 22 2006

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Last modified November 18 20:14 EST 2008. Contains 147244 sequences.


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