Integers n such that 8*10^n+21 is prime.

Terms

a(0) =0a(1) =1a(2) =2a(3) =4a(4) =10a(5) =40a(6) =55a(7) =162a(8) =264a(9) =506a(10) =870a(11) =948a(12) =1339a(13) =3587a(14) =6428a(15) =48490a(16) =81487