Numbers n such that "n 42's followed by 43" is prime.

Terms

a(0) =0a(1) =1a(2) =2a(3) =3a(4) =4a(5) =7a(6) =17a(7) =24a(8) =59a(9) =199a(10) =743a(11) =2558a(12) =4896a(13) =5539a(14) =6192a(15) =10977a(16) =27679