%N a(n) is the smallest composite number m such that all n numbers m+4*k^2 for k=1,2,...,n are prime.
%C There is no further term up to 5*10^8.
%Y Cf. A145741, A145742.
%A _Farideh Firoozbakht_, Oct 17 2008
%E a(12)-a(13) from _Donovan Johnson_, Nov 17 2008