OFFSET
0,1
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 0..150
Tanya Khovanova, Recursive Sequences
Index entries for linear recurrences with constant coefficients, signature (49).
FORMULA
From Philippe Deléham, Nov 24 2008: (Start)
a(n) = 49*a(n-1); a(0)=7.
G.f.: 7/(1-49*x).
a(n) = 7*A087752(n). (End)
From Elmo R. Oliveira, Aug 27 2024: (Start)
E.g.f.: 7*exp(49*x).
MATHEMATICA
NestList[49#&, 7, 20] (* Harvey P. Dale, Jul 15 2019 *)
PROG
(Magma) [7^(2*n+1): n in [0..20]]; // Vincenzo Librandi, May 26 2011
(PARI) a(n)=7^(2*n+1) \\ Charles R Greathouse IV, Jul 11 2016
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
STATUS
approved