Numbers k such that 7*10^k + 69 is prime.

Terms

a(0) =1a(1) =2a(2) =3a(3) =6a(4) =7a(5) =8a(6) =10a(7) =12a(8) =13a(9) =21a(10) =46a(11) =68a(12) =91a(13) =153a(14) =366a(15) =1112a(16) =1185a(17) =1222a(18) =7161a(19) =20077a(20) =33435a(21) =40747a(22) =99133a(23) =108300a(24) =136716