OFFSET
1,1
COMMENTS
Numbers are listed in increasing order, no duplicates allowed (i.e., if the number is so expressible in 3 or more ways).
a(n) >> n^(12/7) by a counting argument. Can this be improved? Is there a corresponding upper bound? - Charles R Greathouse IV, Sep 27 2012
LINKS
Frank Ruskey, Table of n, a(n) for n = 1..5000
EXAMPLE
a(1) = 4097 = 1^3 + 8^4 = 16^3 + 1^4 is the smallest such number.
CROSSREFS
KEYWORD
nonn
AUTHOR
Frank Ruskey, Sep 27 2012
STATUS
approved