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A033906 Sort then Add!. +0
1
20, 22, 44, 88, 176, 343, 677, 1354, 2699, 5398, 8987, 16876, 33554, 67009, 67688, 134476, 268943, 503632, 526988, 783877, 1161665, 2277331, 3500708, 3504286, 3738854, 7084642, 7329320, 7552699, 10109498, 10224397, 11447876, 22894654 (list; graph; listen)
OFFSET

1,1

FORMULA

a(n)=A033905(n-1), n>2. [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Oct 22 2008]

CROSSREFS

Cf. A033860.

Sequence in context: A036227 A133260 A163630 this_sequence A139357 A104059 A104057

Adjacent sequences: A033903 A033904 A033905 this_sequence A033907 A033908 A033909

KEYWORD

nonn,base,easy

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com), David W. Wilson (davidwwilson(AT)comcast.net)

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


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