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Search: id:A087069
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A087069 a(n) = Sum{Floor(n/(4^k): k>=0). +0
1
0, 1, 2, 3, 5, 6, 7, 8, 10, 11, 12, 13, 15, 16, 17, 18, 21, 22, 23, 24, 26, 27, 28, 29, 31, 32, 33, 34, 36, 37, 38, 39, 42, 43, 44, 45, 47, 48, 49, 50, 52, 53, 54, 55, 57, 58, 59, 60, 63, 64, 65, 66, 68, 69, 70, 71, 73, 74, 75, 76, 78, 79, 80, 81, 85, 86, 87, 88, 90, 91, 92, 93 (list; graph; listen)
OFFSET

0,3

EXAMPLE

a(4)=5=4+[4/4]+[4/16]+[4/64]+...

CROSSREFS

Cf. A005187.

Sequence in context: A039145 A038129 A062071 this_sequence A023737 A037459 A020654

Adjacent sequences: A087066 A087067 A087068 this_sequence A087070 A087071 A087072

KEYWORD

nonn

AUTHOR

Clark Kimberling (ck6(AT)evansville.edu), Aug 07 2003

page 1

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Last modified November 23 17:09 EST 2009. Contains 167438 sequences.


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