Numbers k such that 2*10^k + 41 is prime.

Terms

a(0) =0a(1) =1a(2) =2a(3) =5a(4) =11a(5) =13a(6) =14a(7) =36a(8) =37a(9) =41a(10) =43a(11) =49a(12) =53a(13) =138a(14) =146a(15) =269a(16) =313a(17) =428a(18) =517a(19) =860a(20) =1297a(21) =3185a(22) =4477a(23) =6737a(24) =14204a(25) =68744a(26) =170767a(27) =184723