A134499 a(n) = Fibonacci(7*n+1).

1, 21, 610, 17711, 514229, 14930352, 433494437, 12586269025, 365435296162, 10610209857723, 308061521170129, 8944394323791464, 259695496911122585, 7540113804746346429, 218922995834555169026, 6356306993006846248183

Offset

0,2

Links

Table of n, a(n) for n=0..15.

Index entries for linear recurrences with constant coefficients, signature (29,1).

Formula

G.f.: ( -1+8*x ) / ( -1+29*x+x^2 ). - R. J. Mathar, Apr 17 2011

2*a(n) = Fibonacci(7*n) + Lucas(7*n). - Bruno Berselli, Oct 13 2017

Mathematica

Table[Fibonacci[7 n + 1], {n, 0, 30}]

Prog

(Magma) [Fibonacci(7*n+1): n in [0..100]]; // Vincenzo Librandi, Apr 16 2011
(PARI) a(n)=fibonacci(7*n+1) \\ Charles R Greathouse IV, Jun 11 2015

Crossrefs

Cf. A000032, A000045, A134498, A134500, A134501, A134502, A134503, A134504.

Sequence in context: A231639 A159278 A296672 * A365744 A231852 A327681

Adjacent sequences: A134496 A134497 A134498 * A134500 A134501 A134502

Keyword

nonn,easy

Author

Artur Jasinski, Oct 28 2007

Extensions

Offset corrected by Vincenzo Librandi, Apr 16 2011

Status

approved