Y by Adventure10, Mango247
For a set
of nonnegative integers, let
denote the number of ordered pairs
such that
,
,
, and
. Is it possible to partition the nonnegative integers into two sets
and
in such a way that
for all
?











This post has been edited 1 time. Last edited by rrusczyk, May 8, 2018, 12:40 PM
Reason: LaTeX touch-up
Reason: LaTeX touch-up