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Search: id:A061785
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A061785 a(n) = m such that 2^m < 5^n < 2^(m+1). +0
2
2, 4, 6, 9, 11, 13, 16, 18, 20, 23, 25, 27, 30, 32, 34, 37, 39, 41, 44, 46, 48, 51, 53, 55, 58, 60, 62, 65, 67, 69, 71, 74, 76, 78, 81, 83, 85, 88, 90, 92, 95, 97, 99, 102, 104, 106, 109, 111, 113, 116, 118, 120, 123, 125, 127, 130, 132, 134, 136, 139, 141, 143, 146, 148 (list; graph; listen)
OFFSET

1,1

EXAMPLE

a(2)=4 since 2^4 < 5^2 < 2^(4+1).

CROSSREFS

Adjacent sequences: A061782 A061783 A061784 this_sequence A061786 A061787 A061788

Sequence in context: A085148 A059566 A059545 this_sequence A047292 A091626 A085223

KEYWORD

nonn

AUTHOR

Lekraj Beedassy (blekraj(AT)yahoo.com), May 09 2003

EXTENSIONS

Corrected and extended by John W. Layman (layman(AT)math.vt.edu), May 09 2003

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Last modified May 16 23:01 EDT 2008. Contains 139884 sequences.


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