Numbers n such that 10^n - 77 is prime.

Terms

a(0) =2a(1) =4a(2) =5a(3) =14a(4) =44a(5) =64a(6) =103a(7) =282a(8) =643a(9) =670a(10) =818a(11) =1092a(12) =1775a(13) =1856a(14) =4080a(15) =4178a(16) =4498a(17) =6815a(18) =8293a(19) =10112a(20) =12023a(21) =13643