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Search: id:A087323
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| 3, 11, 31, 79, 191, 447, 1023, 2303, 5119, 11263, 24575, 53247, 114687, 245759, 524287, 1114111, 2359295, 4980735, 10485759, 22020095, 46137343, 96468991, 201326591, 419430399, 872415231, 1811939327, 3758096383, 7784628223
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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Row sums of triangle in A018900. [From Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Jun 24 2009]
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FORMULA
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a(n) = (n+1)*2^n - 1.
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CROSSREFS
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Cf. A087322.
Sequence in context: A093406 A097081 A107587 this_sequence A034543 A054343 A108898
Adjacent sequences: A087320 A087321 A087322 this_sequence A087324 A087325 A087326
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KEYWORD
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nonn,easy
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AUTHOR
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Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Sep 03 2003
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EXTENSIONS
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Edited and extended by David Wasserman (wasserma(AT)spawar.navy.mil), May 06 2005
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