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%I #6 Mar 31 2012 14:39:52
%S 15,21,39,51,55,75,91,99,105,121,159,165,169,187,195,249,265,285,309,
%T 325,327,339,351,385,441,471,481,489,511,517,531,595,609,615,625,685,
%U 789,805,841,879,891,909,915,939,951,955,987,999,1027,1035,1045,1057
%N Composites for which the row of the prime-composite array (A063173) includes the leftmost element of a zero-only diagonal (A067677).
%H N. Fernandez, <a href="http://www.borve.org/primeness/pcarray.html">The prime-composite array, B(m,n) and the Borve conjectures</a>
%e The 12th composite is 21. In the prime-composite array (A063173), all of the elements in the diagonal containing T(12,1) are 0. So 21 is in the sequence.
%Y Cf. A063173, A063174, A063176, A067677.
%K nonn
%O 1,1
%A _Neil Fernandez_, Jul 09 2001
%E Edited and extended by _Robert G. Wilson v_, Feb 07 2002