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

A068679

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

Terms

    a(0) =1a(1) =3a(2) =7a(3) =13a(4) =31a(5) =49a(6) =63a(7) =81a(8) =91a(9) =99a(10) =103a(11) =109a(12) =117a(13) =123a(14) =151a(15) =181a(16) =193a(17) =213a(18) =231a(19) =279a(20) =319a(21) =367a(22) =427a(23) =459a(24) =571a(25) =601a(26) =613a(27) =621a(28) =697a(29) =721

External references