OFFSET
0,1
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 0..200
Tanya Khovanova, Recursive Sequences
Index entries for linear recurrences with constant coefficients, signature (2401).
FORMULA
From Philippe Deléham, Dec 02 2008: (Start)
a(n) = 2401*a(n-1); a(0)=7.
G.f.: 7/(1-2401*x).
a(n) = A013787(n)/49. (End)
MATHEMATICA
NestList[2401#&, 7, 20] (* Harvey P. Dale, Oct 04 2024 *)
PROG
(Magma) [7^(4*n+1): n in [0..15]]; // Vincenzo Librandi, Jun 28 2011
(PARI) a(n)=7^(4*n+1) \\ Charles R Greathouse IV, Jul 11 2016
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
STATUS
approved