Numbers k such that 3*2^k + 1 is a prime factor of a generalized Fermat number 3^(2^m) + 1 for some m.

A268657

Numbers k such that 3*2^k + 1 is a prime factor of a generalized Fermat number 3^(2^m) + 1 for some m.

Terms

    a(0) =6a(1) =12a(2) =18a(3) =30a(4) =36a(5) =41a(6) =66a(7) =189a(8) =201a(9) =209a(10) =276a(11) =408a(12) =438a(13) =534a(14) =2208a(15) =3168a(16) =3189a(17) =3912a(18) =34350a(19) =42294a(20) =44685a(21) =48150a(22) =54792a(23) =55182a(24) =59973a(25) =80190a(26) =157169a(27) =213321a(28) =303093a(29) =382449

External references