OFFSET
0,1
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 0..1000
Index entries for linear recurrences with constant coefficients, signature (8,-7).
FORMULA
a(n) = 7*a(n-1)-3.
a(n) = 8*a(n-1)-7*a(n-2).
G.f.: (5-8*x)/((1-x)*(1-7*x)).
PROG
(Magma) [(9*7^n+1)/2: n in [0..30]];
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Vincenzo Librandi, Nov 07 2011
STATUS
approved