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A022371 Fibonacci sequence beginning 2, 18. 0
2, 18, 20, 38, 58, 96, 154, 250, 404, 654, 1058, 1712, 2770, 4482, 7252, 11734, 18986, 30720, 49706, 80426, 130132, 210558, 340690, 551248, 891938, 1443186, 2335124, 3778310, 6113434, 9891744, 16005178 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

Table of n, a(n) for n=0..30.

Tanya Khovanova, Recursive Sequences

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

FORMULA

G.f.: (2+16x)/(1-x-x^2). - Philippe Deléham, Nov 19 2008

MATHEMATICA

a={}; b=2; 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 *)

Transpose[NestList[{Last[#], Total[#]}&, {2, 18}, 30]][[1]]  (* Harvey P. Dale, Apr 13 2011 *)

CROSSREFS

Sequence in context: A231502 A231864 A066242 * A266956 A092587 A247457

Adjacent sequences:  A022368 A022369 A022370 * A022372 A022373 A022374

KEYWORD

nonn

AUTHOR

N. J. A. Sloane

STATUS

approved

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Last modified March 29 15:31 EDT 2017. Contains 284273 sequences.