OFFSET
0,2
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 0..1000
Index entries for linear recurrences with constant coefficients, signature (8, -6).
FORMULA
a(n)=Sum_{k, 0<=k<=n}A147703(n,k)*5^k . G.f.: (1-2x)/(1-8x+6*x^2).
a(n)= ((5+sqrt(10))/10)*(4+sqrt(10))^n + ((5-sqrt(10))/10)*(4-sqrt(10))^n [From Richard Choulet, Nov 20 2008]
MATHEMATICA
LinearRecurrence[{8, -6}, {1, 6}, 40] (* Harvey P. Dale, Mar 01 2012 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Philippe Deléham, Nov 14 2008
STATUS
approved