OFFSET
1,1
EXAMPLE
The first few values of S(n) are 1/2, 5/6, 14/15, 103/105, 1889/1890, 1787939/1787940, 1598366509739/1598366509740, ... Note S(4) is exceptional, in that the numerator and denominator differ by 2 instead of 1.
CROSSREFS
KEYWORD
nonn,base,frac
AUTHOR
N. J. A. Sloane, Sep 13 2024
STATUS
approved