A022374 Fibonacci sequence beginning 2, 24.

2, 24, 26, 50, 76, 126, 202, 328, 530, 858, 1388, 2246, 3634, 5880, 9514, 15394, 24908, 40302, 65210, 105512, 170722, 276234, 446956, 723190, 1170146, 1893336, 3063482, 4956818, 8020300, 12977118, 20997418, 33974536, 54971954, 88946490, 143918444, 232864934, 376783378, 609648312

Offset: 0

Author

N. J. A. Sloane

Keywords

• nonn

Links

• G. C. Greubel, Table of n, a(n) for n = 0..1000
• Tanya Khovanova, Recursive Sequences
• Index entries for linear recurrences with constant coefficients, signature (1, 1).

Crossrefs

Cf. A022102.

Programs

Mathematica

LinearRecurrence[{1,1}, {2,24}, 50] (* G. C. Greubel, Oct 04 2017 *)

PARI

x='x+O('x^50); Vec((2+22*x)/(1-x-x^2)) \\ G. C. Greubel, Oct 04 2017

Formula

G.f.: 2*(1+11*x)/(1-x-x^2). - Philippe Deléham, Nov 19 2008

Equals 2*A022102(n). - Bruno Berselli, Oct 05 2017

a(n) = a(n-1)+a(n-2). - Wesley Ivan Hurt, May 10 2021

Extensions

Terms a(30) onward added by G. C. Greubel, Oct 04 2017