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%I #9 May 01 2013 20:56:06
%S 742,3878,7574,16058,2155174,17886218,312562708,599256826,5015867878,
%T 6305036122,7661332826
%N Numbers whose squares have an odd square abundance
%C Kravitz conjectured that no numbers exist whose abundance is a positive odd square. The squares of this sequence are counterexamples.
%C a(12) <= 37379475098. a(13) <= 56559884906. - _Donovan Johnson_, Apr 07 2011
%D Guy, R. K. Unsolved Problems in Number Theory, 3rd ed. New York: Springer-Verlag, 2004, page 74.
%H Eric Weisstein, <a href="http://mathworld.wolfram.com/KravitzConjecture.html">Kravitz Conjecture</a>
%Y Cf. A188486
%K nonn,hard,more
%O 1,1
%A _Ed Pegg Jr_, Apr 01 2011
%E More terms, page number in Guy, cross references.
%E a(9)-a(11) from _Donovan Johnson_, Apr 07 2011
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