OFFSET
1,3
EXAMPLE
a(2) = 1 because we have 1/2 = 1/3 + 1/6.
CROSSREFS
KEYWORD
nonn,hard,more
AUTHOR
Ilya Gutkovskiy, Apr 04 2021
EXTENSIONS
a(5) from Bert Dobbelaere, Apr 05 2021
a(6) from Jud McCranie, Sep 03 2021
STATUS
approved