Numbers n such that 2*n + {3, 5, 9, 11, 15, 21} are all primes.

Terms

a(0) =1a(1) =4a(2) =739a(3) =82849a(4) =163069a(5) =330544a(6) =511249a(7) =534349a(8) =623179a(9) =730699a(10) =958864a(11) =1529434a(12) =2077954a(13) =2109139a(14) =2763499a(15) =4172074a(16) =5067199a(17) =5882524a(18) =5950249a(19) =6532159a(20) =7860409a(21) =7880044a(22) =9252184a(23) =9368419a(24) =9564769a(25) =9605719a(26) =10024984