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Search: id:A140429
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| 0, 1, 3, 9, 27, 81, 243, 729, 2187, 6561, 19683, 59049, 177147, 531441, 1594323, 4782969, 14348907, 43046721, 129140163, 387420489, 1162261467, 3486784401, 10460353203, 31381059609, 94143178827, 282429536481, 847288609443
(list; graph; listen)
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OFFSET
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0,3
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COMMENT
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Implicit use in A094555 (Barry).
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FORMULA
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a(n)=A000244(n-1), n >0.
O.g.f.: x/(1-3x). - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Aug 27 2008
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CROSSREFS
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Cf. A000079(n)=A131577, A133494.
Adjacent sequences: A140426 A140427 A140428 this_sequence A140430 A140431 A140432
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KEYWORD
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nonn,new
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AUTHOR
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Paul Curtz (bpcrtz(AT)free.fr), Jun 19 2008
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EXTENSIONS
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Extended by R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Aug 28 2008
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