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A166025 a(0) = 6, a(1) = 17, a(n+1) = a(n) + a(n-1) for n>0. 1
6, 17, 23, 40, 63, 103, 166, 269, 435, 704, 1139, 1843, 2982, 4825, 7807, 12632, 20439, 33071, 53510, 86581, 140091, 226672, 366763, 593435, 960198, 1553633, 2513831, 4067464, 6581295, 10648759, 17230054, 27878813, 45108867, 72987680, 118096547 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

G. C. Greubel, Table of n, a(n) for n = 0..1000

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

FORMULA

G.f.: (6+11x)/(1-x-x^2). - Philippe Deléham, Oct 06 2009

a(n) = 6*A000045(n+1) + 11*A000045(n). - R. J. Mathar, Oct 06 2009

a(n) = 3*((1/2 + 1/2*sqrt(5))^n + (1/2 - 1/2*sqrt(5))^n) + 14/5*sqrt(5)*((1/2 + 1/2*sqrt(5))^n - (1/2 - 1/2 *sqrt(5))^n). - Paolo P. Lava, Jun 06 2011

MATHEMATICA

Join[{a=6, b=17}, Table[c=a+b; a=b; b=c, {n, 60}]] (* Vladimir Joseph Stephan Orlovsky, Feb 28 2011 *)

Join[{6}, LinearRecurrence[{1, 1}, {17, 23}, 100]] (* G. C. Greubel, Apr 21 2016 *)

CROSSREFS

Sequence in context: A009171 A012417 A184549 * A171786 A017461 A061875

Adjacent sequences:  A166022 A166023 A166024 * A166026 A166027 A166028

KEYWORD

nonn

AUTHOR

Akshay Verma (11akshayV(AT)nist.ac.th), Oct 04 2009

EXTENSIONS

Edited by N. J. A. Sloane, Oct 05 2009

STATUS

approved

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Last modified March 21 04:59 EDT 2019. Contains 321364 sequences. (Running on oeis4.)