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Abstract
The number
N ( k , r )
is defined to be the first integer such that it and every subsequent integer can be written as the
sum of the
k -th
powers of
r
or more distinct positive integers. For example, it is known that
N ( 2 , 1 )
= 1 2 9 ,
and thus the last number that cannot be written as the sum of one
or more distinct squares is 128. We give a proof of a theorem that
states if certain conditions are met, a number can be verified to be
N ( k , r ) . We then use that
theorem to find
N ( 2 , r )
for
1
≤
r
≤ 5 0
and
N ( 3 , r )
for
1
≤
r
≤ 3 0 .
Keywords
number theory, Waring, anti-Waring, series
Mathematical Subject Classification 2010
Primary: 11A67
Milestones
Received: 24 April 2013
Revised: 10 July 2013
Accepted: 24 July 2013
Published: 16 November 2013
Communicated by Nigel Boston