Pseudoprimes to base 50.

Terms

a(0) =21a(1) =49a(2) =51a(3) =119a(4) =133a(5) =147a(6) =231a(7) =301a(8) =357a(9) =561a(10) =637a(11) =697a(12) =793a(13) =817a(14) =833a(15) =861a(16) =931a(17) =1037a(18) =1281a(19) =1649a(20) =1729a(21) =2009a(22) =2041a(23) =2047a(24) =2107a(25) =2499a(26) =2501a(27) =2701a(28) =2821a(29) =2989