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A085354
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3*4^n-(n+4)*2^(n-1).
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2
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1, 7, 36, 164, 704, 2928, 11968, 48448, 195072, 783104, 3138560, 12567552, 50298880, 201256960, 805158912, 3220914176, 12884246528, 51538231296, 206155546624, 824627691520, 3298522300416, 13194113318912, 52776503607296
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OFFSET
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0,2
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COMMENTS
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Binomial transform of A060188.
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LINKS
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Vincenzo Librandi, Table of n, a(n) for n = 0..1000
Index to sequences with linear recurrences with constant coefficients, signature (8,-20,16).
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FORMULA
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a(n) = sum{m=2^n..2^(n+1)} A005187(m). a(n) = 2^n*(2^(n+1)-1) + Sum_{k=0..(n-1)} a(k) . - Philippe Deléham, Feb 19 2004
G.f.: (1-x)/((1-4*x)*(1-2*x)^2). - Bruno Berselli, Sep 05 2011
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PROG
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(MAGMA) [3*4^n-(n+4)*2^(n-1): n in [0..30]]; // Vincenzo Librandi, Sep 05 2011
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CROSSREFS
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Sequence in context: A080420 A181292 A026018 * A051198 A003516 A095931
Adjacent sequences: A085351 A085352 A085353 * A085355 A085356 A085357
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KEYWORD
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nonn,easy
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AUTHOR
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Paul Barry, Jun 24 2003
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STATUS
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approved
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