OFFSET
1,2
COMMENTS
Good approximation up to the 9th decimal digits: 11710/21017.
LINKS
Paolo P. Lava, Table of n, a(n) for n = 1..1000
EXAMPLE
0.557168006978769275175928974699... = [0, 1, 1, 3, 1, 6, 1, 7, 4, 8, 1, 14]
MAPLE
with(numtheory): P:=proc(q) local a, n; a:=sigma(q)-q+1;
for n from q-1 by -1 to 1 do a:=sigma(n)-n+1/a; od;
lprint(evalf(a, 100)); end: P(1);
CROSSREFS
KEYWORD
nonn,cons
AUTHOR
Paolo P. Lava, Jun 07 2016
STATUS
approved