OFFSET
0,1
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 0..500
G. Xiao, Contfrac.
Index entries for linear recurrences with constant coefficients, signature (0,0,0,1).
FORMULA
From Amiram Eldar, Nov 15 2023: (Start)
Multiplicative with a(2) = 9, a(2^e) = 20 for e >= 2, and a(p^e) = 1 for an odd prime p.
Dirichlet g.f.: zeta(s) * (1 + 1/2^(s-3) + 11/4^s). (End)
MATHEMATICA
ContinuedFraction[Sqrt[119], 300] (* Vladimir Joseph Stephan Orlovsky, Mar 11 2011 *)
CROSSREFS
KEYWORD
nonn,cofr,easy,mult
AUTHOR
STATUS
approved