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A022384 Fibonacci sequence beginning 4, 18. 0
4, 18, 22, 40, 62, 102, 164, 266, 430, 696, 1126, 1822, 2948, 4770, 7718, 12488, 20206, 32694, 52900, 85594, 138494, 224088, 362582, 586670, 949252, 1535922, 2485174, 4021096, 6506270, 10527366 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

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.: (4+14*x)/(1-x-x^2). - Philippe Deléham, Nov 19 2008

a(0)=4, a(1)=18, a(n) = a(n-1) + a(n-2). - Harvey P. Dale, Sep 04 2011

MATHEMATICA

a={}; b=4; c=18; 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 18 2008 *)

LinearRecurrence[{1, 1}, {4, 18}, 40] (* or *) CoefficientList[ Series[ -((2 (7x+2))/(x^2+x-1)), {x, 0, 40}], x](* Harvey P. Dale, Sep 04 2011 *)

CROSSREFS

Sequence in context: A103061 A230605 A201880 * A093022 A255409 A057342

Adjacent sequences:  A022381 A022382 A022383 * A022385 A022386 A022387

KEYWORD

nonn

AUTHOR

N. J. A. Sloane

STATUS

approved

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Last modified March 22 22:17 EDT 2017. Contains 283901 sequences.