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A022349 Fibonacci sequence beginning 0, 15. 0
0, 15, 15, 30, 45, 75, 120, 195, 315, 510, 825, 1335, 2160, 3495, 5655, 9150, 14805, 23955, 38760, 62715, 101475, 164190, 265665, 429855, 695520, 1125375, 1820895, 2946270, 4767165, 7713435, 12480600, 20194035, 32674635, 52868670, 85543305, 138411975, 223955280, 362367255, 586322535, 948689790, 1535012325 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..40.

Tanya Khovanova, Recursive Sequences

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

FORMULA

G.f.: 15*x/(1 - x - x^2). - Philippe Deléham, Nov 20 2008

From Bruno Berselli, Jul 27 2017: (Start)

a(n) = 15*A000045(n).

a(n) = Lucas(n+4) - Lucas(n-4), where Lucas(i) for i = 0..3 gives 7, -4, 3, -1. (End)

MATHEMATICA

Table[15 Fibonacci[n], {n, 0, 40}] (* or *) LinearRecurrence[{1, 1}, {0, 15}, 40] (* Bruno Berselli, Jul 27 2017 *)

PROG

(MAGMA) a0:=0; a1:=15; [GeneralizedFibonacciNumber(a0, a1, n): n in [0..40]]; // Bruno Berselli, Jul 27 2017

CROSSREFS

Cf. A000032, A000045.

Sequence in context: A003890 A040211 A003891 * A036379 A070920 A056484

Adjacent sequences:  A022346 A022347 A022348 * A022350 A022351 A022352

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane

STATUS

approved

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Last modified August 18 10:57 EDT 2017. Contains 290712 sequences.