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A133086
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Row sums of triangle A133085.
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1
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1, 4, 10, 26, 64, 152, 352, 800, 1792, 3968, 8704, 18944, 40960, 88064, 188416, 401408, 851968, 1802240, 3801088, 7995392, 16777216, 35127296, 73400320, 153092096, 318767104, 662700032, 1375731712
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OFFSET
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0,2
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LINKS
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Table of n, a(n) for n=0..26.
Index to sequences with linear recurrences with constant coefficients, signature (4,-4).
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FORMULA
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Binomial transform of A114753: (1, 3, 3, 7, 5, 11, 7, 15,...).
For n>1, a(n) = 2^n +3*n*2^(n-2). - R. J. Mathar, Apr 04 2012
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EXAMPLE
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a(3) = 26 = sum of row 3 terms of triangle A133085: (12 + 8, + 5 + 1).
a(3) = 26 = (1, 3, 3, 1) dot (1, 3, 3, 7) = (1 + 9 + 9 + 7).
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CROSSREFS
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Cf. A133085, A114753, A133080.
Sequence in context: A192306 A000293 A000294 * A178037 A175658 A191605
Adjacent sequences: A133083 A133084 A133085 * A133087 A133088 A133089
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KEYWORD
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nonn
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AUTHOR
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Gary W. Adamson, Sep 08 2007
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STATUS
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approved
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