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A206605
Fibonacci sequence beginning 14, 11.
3
14, 11, 25, 36, 61, 97, 158, 255, 413, 668, 1081, 1749, 2830, 4579, 7409, 11988, 19397, 31385, 50782, 82167, 132949, 215116, 348065, 563181, 911246, 1474427, 2385673, 3860100, 6245773, 10105873, 16351646, 26457519, 42809165, 69266684, 112075849, 181342533
OFFSET
1,1
FORMULA
a(n) = Fibonacci(n+5) + Fibonacci(n) + Fibonacci(n-6). - Greg Dresden and Aamen Muharram, Jul 22 2022
G.f.: x*(14 - 3*x)/(1 - x - x^2). - Stefano Spezia, Jul 22 2022
MATHEMATICA
LinearRecurrence[{1, 1}, {14, 11}, 80]
PROG
(Magma) I:=[14, 11]; [n le 2 select I[n] else Self(n-1)+ Self(n-2): n in [1..40]]; // Vincenzo Librandi, Feb 16 2012
CROSSREFS
Sequence in context: A259531 A240815 A305938 * A377416 A004503 A340720
KEYWORD
nonn,easy
AUTHOR
STATUS
approved