login
A223856
Decimal representation of continued fraction tau(1), tau(2), tau(3), tau(4), ...
5
1, 4, 1, 0, 3, 9, 1, 0, 2, 7, 8, 6, 3, 6, 3, 0, 3, 6, 0, 9, 6, 2, 6, 1, 8, 4, 7, 4, 5, 5, 3, 0, 5, 5, 8, 9, 0, 9, 4, 5, 7, 6, 0, 0, 9, 7, 3, 8, 2, 2, 0, 0, 5, 0, 3, 2, 6, 4, 0, 5, 4, 3, 0, 8, 7, 1, 1, 3, 7, 6, 1, 1, 1, 0, 0, 3, 2, 0, 1, 1, 0, 9, 3, 7, 7, 8, 4
OFFSET
1,2
LINKS
EXAMPLE
1.410391027863630360962618474553... = [1, 2, 2, 3, 2, 4, 2, 4, 3, 4, 2, 6, 2, 4, 4, ...]
MAPLE
with(numtheory);
A223856:=proc(q) local a, n; a:=tau(q+1);
for n from q by -1 to 1 do a:=1/a+tau(n); od; print(evalf(a, 100)); end:
A223856(10^5);
MATHEMATICA
digits = 100; Flatten[ContinuedFraction[Table[DivisorSigma[0, n], {n, 1, digits}]]] // FromContinuedFraction // RealDigits[#, 10, digits]& // First (* Jean-François Alcover, Feb 24 2014 *)
CROSSREFS
KEYWORD
nonn,cons
AUTHOR
Paolo P. Lava, Mar 28 2013
STATUS
approved