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%I #14 Oct 19 2017 03:14:36
%S 3,13,103,1153,15013,255253,4849843,111546433,4360010653,100280245063,
%T 5245694198743,152125131763603,7149881192889433,421842990380476663,
%U 16294579238595022363,1106494163767990292293,74135108972455349583763
%N Smallest prime p such that p+2 is a product of exactly n distinct primes.
%C In most cases a(n) = pn! - 2, where pn! is "factorial of odd primes": from 3 to n-th odd prime. - Zak Seidov - _Zak Seidov_ and _Don Reble_, Mar 10 2006
%e 3+2=5 (1 prime), 13+2=15=3*5 (2 primes), 103+2=105=3*5*7 (3 primes), ...
%e 1153 is the 4th entry in the sequence because it is followed by primes 1783, 1993, 2143, 2803, ... with the property 1153+2 = 3*5*7*11, 1783+2 = 3*5*7*17, 1993+2 = 3*5*7*19, 2143+2 = 3*5*11*13, 2803+2 = 3*5*11*17, ...
%Y Cf. A067024 [From _R. J. Mathar_, Sep 02 2008]
%K nonn
%O 1,1
%A _Lekraj Beedassy_, Sep 10 2004
%E Extended by _Ray Chandler_, Sep 18 2004
%E More terms from _Zak Seidov_ and _Don Reble_, Mar 10 2006
%E Corrected by _Don Reble_, Apr 03 2006
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