Pseudoprimes to base 13.

Terms

a(0) =4a(1) =6a(2) =12a(3) =21a(4) =85a(5) =105a(6) =231a(7) =244a(8) =276a(9) =357a(10) =427a(11) =561a(12) =1099a(13) =1785a(14) =1891a(15) =2465a(16) =2806a(17) =3605a(18) =5028a(19) =5149a(20) =5185a(21) =5565a(22) =6601a(23) =7107a(24) =8841a(25) =8911a(26) =9577a(27) =9637a(28) =10308a(29) =10585