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%I #5 Mar 30 2012 16:50:49
%S 7,9,17,23,25,27,39,41,43,47,55,71,79,81,87,95,97,103,109,111,113,121,
%T 125,137,143,157,159,167,169,183,187,191,193,199,209,229,239,243,247,
%U 251,263,271,277,281,283,289,291,295,303,307,311,313,319,323,335,353,359,361,367
%N Values of e such that A139767 is 2.
%C Can these numbers be described in any other way?
%H N. J. A. Sloane, <a href="/A140364/b140364.txt">Table of n, a(n) for n = 1..292</a>
%K nonn
%O 1,1
%A _N. J. A. Sloane_, Jun 16 2008
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