Non-coprime pseudoprimes or primes to base 3: numbers k that are multiples of 3 and are such that k divides 3^k - 3.

A306451

Non-coprime pseudoprimes or primes to base 3: numbers k that are multiples of 3 and are such that k divides 3^k - 3.

Terms

    a(0) =3a(1) =6a(2) =66a(3) =561a(4) =726a(5) =7107a(6) =8205a(7) =8646a(8) =62745a(9) =100101a(10) =140097a(11) =166521a(12) =237381a(13) =237945a(14) =566805a(15) =656601a(16) =876129a(17) =1053426a(18) =1095186a(19) =1194285a(20) =1234806a(21) =1590513a(22) =1598871a(23) =1938021a(24) =2381259a(25) =2518041a(26) =3426081a(27) =4125441a(28) =5398401a(29) =5454681

External references