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 A028892 a(n) = Fibonacci(n) - 2^(floor(n/2)). 1
 -1, 0, -1, 0, -1, 1, 0, 5, 5, 18, 23, 57, 80, 169, 249, 482, 731, 1341, 2072, 3669, 5741, 9922, 15663, 26609, 42272, 70929, 113201, 188226, 301427, 497845, 799272, 1313501, 2112773, 3459042, 5571815, 9096393 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,8 LINKS G. C. Greubel, Table of n, a(n) for n = 0..1000 FORMULA Empirical G.f.: -(x^3-2*x^2-x+1)/((x^2+x-1)*(2*x^2-1)). - Colin Barker, Sep 21 2012 a(n) = A000045(n) - A016116(n). - Michel Marcus, Aug 20 2017 MATHEMATICA Table[Fibonacci[n] - 2^(Floor[n/2]), {n, 0, 50}] (* G. C. Greubel, Aug 19 2017 *) PROG (PARI) for(n=0, 50, print1(fibonacci(n) - 2^(floor(n/2)), ", ")) \\ G. C. Greubel, Aug 19 2017 CROSSREFS Cf. A000045, A016116. Sequence in context: A283089 A283142 A303310 * A255448 A255445 A255454 Adjacent sequences:  A028889 A028890 A028891 * A028893 A028894 A028895 KEYWORD sign AUTHOR STATUS approved

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Last modified January 27 15:45 EST 2022. Contains 350607 sequences. (Running on oeis4.)