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Search: id:A054601
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A054601 Sum_{d|n, d odd} d*2^(n/d - 1). +0
4
0, 1, 2, 7, 8, 21, 38, 71, 128, 277, 522, 1035, 2072, 4109, 8206, 16467, 32768, 65553, 131186, 262163, 524328, 1048817, 2097174, 4194327, 8388992, 16777321, 33554458, 67109695, 134217784, 268435485, 536872638, 1073741855, 2147483648 (list; graph; listen)
OFFSET

0,3

FORMULA

G.f.: Sum_{k>0} (1-(-1)^k)/2*k*x^k/(1-2*x^k). - Vladeta Jovovic (vladeta(AT)eunet.rs), Oct 17 2003

CROSSREFS

Cf. A054598-A054600, A000016, A000031.

Sequence in context: A015617 A026579 A167767 this_sequence A117558 A117559 A081700

Adjacent sequences: A054598 A054599 A054600 this_sequence A054602 A054603 A054604

KEYWORD

nonn

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com), Apr 16 2000

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Last modified December 7 08:40 EST 2009. Contains 170430 sequences.


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