OFFSET
0,1
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 0..1000
Index entries for linear recurrences with constant coefficients, signature (6,-5).
FORMULA
a(n) = 5*a(n-1)-4.
a(n) = 6*a(n-1)-5*a(n-2).
G.f.: (5-9*x)/((1-x)*(1-5*x)). - Bruno Berselli, Nov 04 2011
MATHEMATICA
4*5^Range[0, 30]+1 (* or *) LinearRecurrence[{6, -5}, {5, 21}, 30] (* Harvey P. Dale, Mar 30 2018 *)
PROG
(Magma) [4*5^n+1: n in [0..30]];
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Vincenzo Librandi, Nov 04 2011
STATUS
approved