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A135092
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Binomial transform of [1, 6, 1, 6, 1, 6,...].
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4
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1, 7, 14, 28, 56, 112, 224, 448, 896, 1792, 3584, 7168, 14336, 28672, 57344, 114688, 229376, 458752, 917504, 1835008, 3670016, 7340032, 14680064, 29360128, 58720256, 117440512, 234881024, 469762048, 939524096, 1879048192, 3758096384, 7516192768, 15032385536
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,2
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LINKS
| Vincenzo Librandi, Table of n, a(n) for n = 0..3000
Index to sequences with linear recurrences with constant coefficients, signature (2).
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FORMULA
| a(n) = 7*2^(n-1) for n>0, a(0)=1.
a(n) = Sum_{k, 0<=k<=n}A097805(n,k)*7^k*(-5)^(n-k) . - Philippe DELEHAM, Nov 19 2007
G.f.: (1+5*x)/(1-2*x). - Bruno Berselli, Sep 20 2011
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EXAMPLE
| a(3) = (1, 3, 3, 1) dot (1, 6, 1, 6) = (1 + 18 + 3 + 6) = 28 = 7*2^2.
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CROSSREFS
| Essentially identical to A005009.
Sequence in context: A196876 A115876 A005009 * A058530 A134384 A084382
Adjacent sequences: A135089 A135090 A135091 * A135093 A135094 A135095
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KEYWORD
| nonn,easy
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AUTHOR
| Gary W. Adamson (qntmpkt(AT)yahoo.com), Nov 18 2007
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EXTENSIONS
| Corrected and extended by Philippe DELEHAM and N. J. A. Sloane, Dec 15 2007
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