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Search: id:A135423
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| 3, 23, 203, 1823, 16403, 147623, 1328603, 11957423, 107616803, 968551223, 8716961003, 78452649023, 706073841203, 6354664570823, 57191981137403, 514727830236623, 4632550472129603, 41692954249166423, 375236588242497803
(list; graph; listen)
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OFFSET
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0,1
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FORMULA
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O.g.f.: [1/(1-x)-5/(9x-1)]/2 . a(n) = (1+5*9^n)/2 . - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Feb 19 2008
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CROSSREFS
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Sequence in context: A060880 A093155 A096649 this_sequence A114017 A068691 A093135
Adjacent sequences: A135420 A135421 A135422 this_sequence A135424 A135425 A135426
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KEYWORD
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nonn,easy
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AUTHOR
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Paul Curtz (bpcrtz(AT)free.fr), Feb 18 2008
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EXTENSIONS
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More terms from R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Feb 19 2008
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