OFFSET
0,1
LINKS
FORMULA
From Amiram Eldar, Jan 10 2024: (Start)
Multiplicative with a(2) = 12, a(2^e) = 54 for e >= 2, and a(p^e) = 1 for an odd prime p.
Dirichlet g.f.: zeta(s) * (1 + 11/2^s + 21/2^(2*s-1)). (End)
MAPLE
with(numtheory): Digits := 300: convert(evalf(sqrt(780)), confrac);
MATHEMATICA
ContinuedFraction[Sqrt[780], 120] (* or *) PadRight[{27}, 120, {54, 1, 12, 1}] (* Harvey P. Dale, Apr 23 2016 *)
CROSSREFS
KEYWORD
nonn,cofr,easy,mult
AUTHOR
STATUS
approved