Pseudoprimes to base 19.

Terms

a(0) =6a(1) =9a(2) =15a(3) =18a(4) =45a(5) =49a(6) =153a(7) =169a(8) =343a(9) =561a(10) =637a(11) =889a(12) =905a(13) =906a(14) =1035a(15) =1105a(16) =1629a(17) =1661a(18) =1849a(19) =1891a(20) =2353a(21) =2465a(22) =2701a(23) =2821a(24) =2955a(25) =3201a(26) =4033a(27) =4681a(28) =5461a(29) =5466