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 A105693 Fibonacci(2n+2)-2^n. 1
 0, 1, 4, 13, 39, 112, 313, 859, 2328, 6253, 16687, 44320, 117297, 309619, 815656, 2145541, 5637351, 14799280, 38826025, 101809867, 266865720, 699311581, 1832117599, 4799138368, 12569491809, 32917725667, 86200462408, 225717215989 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 LINKS Index to sequences with linear recurrences with constant coefficients, signature (5,-7,2). FORMULA G.f.: x(1-x)/((1-2x)(1-3x+x^2)); a(n)=sum{k=0..n+1, binomial(n+1, k+1)*sum{j=0..floor(k/2), F(k-2j)}}. PROG (MAGMA)[Fibonacci(2*n+2)-2^n: n in [0..30]]; // Vincenzo Librandi, Apr 21 2011 CROSSREFS Cf. A061667. Sequence in context: A058693 A027076 A183112 * A215404 A121192 A133409 Adjacent sequences:  A105690 A105691 A105692 * A105694 A105695 A105696 KEYWORD easy,nonn AUTHOR Paul Barry, Apr 17 2005 STATUS approved

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