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%I #6 Dec 19 2015 12:32:32
%S 1,3,347,7,9,13,319,1041,23,19,21,41,1735,27,7055,31,39,2429,37,957,
%T 41,43,3123,101,49,69,103,3817,57,221,235,63,4511,67,123,4409,73,5205,
%U 91,265,81,157,5899,21165,89,2233,93,6593,97,117,101,103,7287,107,109
%N Conjecturally, largest attractor in '3x+(2n+1)' problem.
%Y Cf. A039508-A039514.
%K nonn
%O 0,2
%A _Christian G. Bower_, Feb 15 1999
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