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A022354 Fibonacci sequence beginning 0, 20. 1
0, 20, 20, 40, 60, 100, 160, 260, 420, 680, 1100, 1780, 2880, 4660, 7540, 12200, 19740, 31940, 51680, 83620, 135300, 218920, 354220, 573140, 927360, 1500500, 2427860, 3928360, 6356220, 10284580 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..29.

Tanya Khovanova, Recursive Sequences

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

FORMULA

G.f.: 20*x/(1-x-x^2). - Philippe Deléham, Nov 20 2008

MATHEMATICA

a={}; b=0; c=20; AppendTo[a, b]; AppendTo[a, c]; Do[b=b+c; AppendTo[a, b]; c=b+c; AppendTo[a, c], {n, 4!}]; a (* Vladimir Joseph Stephan Orlovsky, Sep 17 2008 *)

CROSSREFS

Sequence in context: A010859 A278830 A040381 * A165841 A222958 A212284

Adjacent sequences:  A022351 A022352 A022353 * A022355 A022356 A022357

KEYWORD

nonn

AUTHOR

N. J. A. Sloane

STATUS

approved

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Last modified August 18 08:18 EDT 2017. Contains 290685 sequences.