OFFSET
1,2
COMMENTS
Presumably, every natural number is reached at some step exactly, rather than "stepped over" (as is the case with harmonic series).
EXAMPLE
For the first few terms of A258252, the sums of their reciprocal are: 1, 3/2, 5/3, 2, 9/4, 7/3, 12/5, 5/2, 18/7, 13/5, 14/5, 17/6, 20/7, 3, ... that are equal to 1, 2, 3 for n=1, 4, 14. So a(1)=1, a(2)=4, a(3)=14.
CROSSREFS
KEYWORD
nonn,more
AUTHOR
Ivan Neretin, May 24 2015
STATUS
approved