%N Composite numbers n such that digits of prime factors of n are either 6 or 7.
%C The multiplicative closure of A020469 consists of itself, 1, and this sequence. - _Charles R Greathouse IV_, Jun 25 2014
%H David A. Corneth, <a href="/A036322/b036322.txt">Table of n, a(n) for n = 1..10000</a>
%H <a href="/index/Pri#prime_factors">Index entries for sequences related to prime factors</a>
%Y Cf. A020469, A036302-A036325.
%A _Patrick De Geest_, Dec 15 1998