%I #2 Mar 30 2012 17:36:44
%S 4,6,4,6,4,9,21,6,4,6,4,9,9,6,4,6,4,10,39,6,4,14,9,9,15,6,4,6,4,9,15,
%T 10,21,6,4,10,21,6,4,6,4,9,9,6,4,14,21,10,21,6,4,14,9,10,9,6,4,6,4,9,
%U 21,9,15,6,4,9,9,6,4,6,4,14,9,10,9,6,4,10,25,6,4,14,21,9,15,6,4,9,9,14,21,10
%N Least s with s, t both semiprime and s+2n = t.
%Y Cf. A127019, A020483.
%K nonn
%O 1,1
%A _Rick L. Shepherd_, Jan 02 2007
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