Numbers k such that 7*10^k + 43 is prime.

Terms

a(0) =1a(1) =2a(2) =3a(3) =7a(4) =26a(5) =27a(6) =36a(7) =44a(8) =50a(9) =57a(10) =59a(11) =73a(12) =124a(13) =152a(14) =154a(15) =250a(16) =271a(17) =301a(18) =376a(19) =451a(20) =1177a(21) =2299a(22) =3740a(23) =13159a(24) =14780a(25) =17435a(26) =30098a(27) =32521