%I
%S 1,3,4,6,7,11,14,15,19,21,22,23,27,30,38,39,42,46,47,49,51,55,56,60,
%T 62,66,67,69,70,71,75,77,78,79,83,84,86,87,92,93,94,95,102,103,105,
%U 107,110,111,114,115,118,119,120,123,131,138,139,142,143,147,151,154
%N Numbers having no representation as sum of two powerful numbers (A001694).
%C A085252(a(n))=0; complement of A076871.
%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/PowerfulNumber.html">Powerful Number</a>
%Y Different from A075434.
%K nonn
%O 1,2
%A _Reinhard Zumkeller_, Jun 23 2003
