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%I #7 Jan 08 2019 09:12:41
%S 2,5,17,97,257,3457,12289,40961,65537,786433,5308417,14155777,
%T 104857601,167772161,1811939329,3221225473,24159191041,77309411329,
%U 206158430209,2061584302081,2748779069441,6597069766657,39582418599937
%N Smallest prime which is 1 more than the product of n (not necessarily distinct) composite numbers.
%e a(0) = 1 + 1 = 2, a(3) = 4*4*6 + 1 = 97.
%Y Cf. A081545.
%K hard,nonn
%O 0,1
%A _Amarnath Murthy_, Apr 01 2003
%E More terms from _Michel ten Voorde_ Jun 13 2003
%E Added missing term 12289 and a(13)-a(22) from _Donovan Johnson_, Nov 05 2009