A137392 (10-n) * Fibonacci(n).

9, 8, 14, 18, 25, 32, 39, 42, 34, 0, -89, -288, -699, -1508, -3050, -5922, -11179, -20672, -37629, -67650, -120406, -212532, -372541, -649152, -1125375, -1942288, -3339106, -5720598, -9770351, -16640800, -28271649

Offset: 1

Author

Roger L. Bagula and Gary W. Adamson, Apr 10 2008

Keywords

• sign
• easy

Links

• Index entries for linear recurrences with constant coefficients, signature (2,1,-2,-1).

Crossrefs

Cf. A000045, A045925.

Programs

Mathematica

Table[(10-n)Fibonacci[n],{n,40}] (* or *) LinearRecurrence[{2,1,-2,-1},{9,8,14,18},40] (* Harvey P. Dale, Sep 05 2022 *)

PARI

a(n)=(10-n)*fibonacci(n)

Formula

G.f.: x*(-11*x^2 - 10*x + 9) / (x^2+x-1)^2. - Colin Barker, Jan 01 2013

Extensions

Edited by Ralf Stephan, Dec 24 2013