The least n-almost Sophie Germain prime.

Terms

a(0) =2a(1) =4a(2) =52a(3) =40a(4) =688a(5) =4900a(6) =63112a(7) =178240a(8) =38272a(9) =5357056a(10) =1997824a(11) =247221760a(12) =586504192a(13) =707436544a(14) =15582115840a(15) =47145459712a(16) =77620412416