OFFSET
1,1
COMMENTS
EXAMPLE
The fractions begin with 4/3, 4/3, 13/9, 3/2, 32/21, 45/29, 63/41, 90/59, 111/73, 162/107, ...
The abundancy indices of the first 3 positive integers are 1, 3/2 and 4/3. The median is a(1)/A353616(1) = 4/3.
MATHEMATICA
With[{m = 20}, t = Table[DivisorSigma[-1, n], {n, 1, 2^m + 1}]; Numerator @ Table[Median[t[[1 ;; 2^n + 1]]], {n, 1, m}]]
CROSSREFS
KEYWORD
nonn,frac,more
AUTHOR
Amiram Eldar, Apr 30 2022
STATUS
approved