

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
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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)/(1xx^2).  Philippe Deléham, Nov 19 2008


MAPLE

a:= n> (<<01>, <11>>^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



