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A022135 Fibonacci sequence beginning 4, 19. 0
4, 19, 23, 42, 65, 107, 172, 279, 451, 730, 1181, 1911, 3092, 5003, 8095, 13098, 21193, 34291, 55484, 89775, 145259, 235034, 380293, 615327, 995620, 1610947, 2606567, 4217514, 6824081, 11041595, 17865676, 28907271, 46772947, 75680218, 122453165, 198133383 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

Table of n, a(n) for n=0..35.

Tanya Khovanova, Recursive Sequences

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

FORMULA

G.f.: (4+15*x)/(1-x-x^2). - Philippe Deléham, Nov 19 2008

MAPLE

a:= n-> (<<0|1>, <1|1>>^n. <<4, 19>>)[1, 1]:

seq(a(n), n=0..50);  # Alois P. Heinz, Nov 18 2018

MATHEMATICA

a={}; b=4; c=19; 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

Cf. A000045.

Sequence in context: A072178 A116980 A296602 * A192193 A028564 A282506

Adjacent sequences:  A022132 A022133 A022134 * A022136 A022137 A022138

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane

STATUS

approved

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Last modified December 7 09:33 EST 2019. Contains 329843 sequences. (Running on oeis4.)