Pseudoprimes to base 31.

Terms

a(0) =6a(1) =10a(2) =15a(3) =30a(4) =49a(5) =65a(6) =66a(7) =133a(8) =185a(9) =451a(10) =481a(11) =561a(12) =637a(13) =931a(14) =946a(15) =1105a(16) =1221a(17) =1729a(18) =1813a(19) =2317a(20) =2405a(21) =2465a(22) =2553a(23) =3310a(24) =4753a(25) =4921a(26) =6241a(27) =6289a(28) =6601a(29) =7107