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Search: id:A134396
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| 1, 3, 9, 27, 80, 232, 656, 1808, 4864, 12800, 33024, 83712, 208896, 514048, 1249280, 3002368, 7143424, 16842752, 39387136, 91422720, 210763776, 482869248, 1099956224, 2492465152, 5620367360, 12616466432, 28202500096, 62797119488
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OFFSET
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0,2
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FORMULA
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Binomial transform of A000125. Row sums of triangle A134395.
O.g.f.: (1-x)(1-4x+5x^2)/(1-2x)^4. - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jun 08 2008
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EXAMPLE
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a(3) = 27 = (1, 3, 3, 1) dot (1, 2, 4, 8) = (1 + 6 + 12 + 8), where A000125 = (1, 2, 4, 8, 15, 26, 42,...).
a(3) = 27 = sum of row 3 terms of triangle A134395: (8 + 12 + 6 + 1).
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CROSSREFS
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Cf. A134395, A000125.
Sequence in context: A077844 A077827 A129770 this_sequence A059502 A036142 A036160
Adjacent sequences: A134393 A134394 A134395 this_sequence A134397 A134398 A134399
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KEYWORD
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nonn
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AUTHOR
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Gary W. Adamson (qntmpkt(AT)yahoo.com), Oct 23 2007
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EXTENSIONS
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More terms from R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jun 08 2008
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