OFFSET
0,1
LINKS
Harry J. Smith, Table of n, a(n) for n = 0..20000
G. Xiao, Contfrac.
Index entries for linear recurrences with constant coefficients, signature (0,1).
FORMULA
From Amiram Eldar, Nov 12 2023: (Start)
Multiplicative with a(2^e) = 6, and a(p^e) = 1 for an odd prime p.
Dirichlet g.f.: zeta(s) * (1 + 5/2^s). (End)
EXAMPLE
3.872983346207416885179265399... = 3 + 1/(1 + 1/(6 + 1/(1 + 1/(6 + ...)))). - Harry J. Smith, Jun 03 2009
MAPLE
Digits := 100: convert(evalf(sqrt(N)), confrac, 90, 'cvgts'):
MATHEMATICA
ContinuedFraction[Sqrt[15], 300] (* Vladimir Joseph Stephan Orlovsky, Mar 05 2011 *)
PadRight[{3}, 120, {6, 1}] (* Harvey P. Dale, Apr 14 2020 *)
PROG
(PARI) { allocatemem(932245000); default(realprecision, 19000); x=contfrac(sqrt(15)); for (n=0, 20000, write("b040011.txt", n, " ", x[n+1])); } \\ Harry J. Smith, Jun 03 2009
CROSSREFS
KEYWORD
nonn,cofr,easy,mult
AUTHOR
STATUS
approved