Primes which yield a prime whenever a 1 is inserted anywhere in them (including at the beginning or end).

A069246

Primes which yield a prime whenever a 1 is inserted anywhere in them (including at the beginning or end).

Terms

    a(0) =3a(1) =7a(2) =13a(3) =31a(4) =103a(5) =109a(6) =151a(7) =181a(8) =193a(9) =367a(10) =571a(11) =601a(12) =613a(13) =811a(14) =1117a(15) =1831a(16) =4519a(17) =6871a(18) =11119a(19) =11317a(20) =11467a(21) =13171a(22) =16141a(23) =17167a(24) =18211a(25) =18457a(26) =27241a(27) =38917a(28) =55381a(29) =71317

External references