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%I #3 Mar 30 2012 17:29:22
%S 7,74,70,714,7410,71610,746130,70387590,703600590,70015935990,
%T 700288518930,7420738134810,701098433345310,70016268785853390,
%U 757887406446280110,70025936403159126390,7001749954335151685670
%N Smallest number beginning with 7 that is the product of exactly n distinct primes.
%e a(3) = 70 = 2*5*7.
%Y Cf. A077326-A077334, A106411-A106419, A106421-A106429.
%K base,nonn
%O 1,1
%A _Ray Chandler_, May 02 2005
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