OFFSET
2,1
LINKS
Clark Kimberling, Table of n, a(n) for n = 2..10001 (offset adapted by Georg Fischer, Jan 24 2019)
FORMULA
a(n) = n - 1 + floor(n^s), n >= 2; the complement is given by n + floor(n^(1/s)), n >= 1.
EXAMPLE
The first numbers in the joint ranking are
1 < 2 < 2^s < 3 < 4 < 3^s < 5 < 6 < 7 < 4^s, so that a(n) = (3,6,10,...).
MATHEMATICA
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Clark Kimberling, Sep 06 2016
EXTENSIONS
Edited by Clark Kimberling, Nov 06 2018
STATUS
approved