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)+1. a(n) = 6*a(n-1)-5*a(n-2), n>1.
G.f.: (2-x)/(5*x^2-6*x+1) [From Harvey P. Dale, May 07 2012]
MATHEMATICA
(9*5^Range[0, 30]-1)/4 (* or *) LinearRecurrence[{6, -5}, {2, 11}, 30] (* Harvey P. Dale, May 07 2012 *)
PROG
(Magma) [(9*5^n-1)/4: n in [0..30]]
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Vincenzo Librandi, Oct 30 2011
STATUS
approved