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A022349
Fibonacci sequence beginning 0, 15.
1
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
OFFSET
0,2
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
(PARI) for(n=0, 50, print1(15*fibonacci(n), ", ")) \\ G. C. Greubel, Aug 26 2017
CROSSREFS
Sequence in context: A040211 A003891 A298044 * A036379 A070920 A056484
KEYWORD
nonn,easy
STATUS
approved