Strong pseudoprimes to base 81.

Terms

a(0) =91a(1) =121a(2) =511a(3) =671a(4) =703a(5) =949a(6) =1387a(7) =1541a(8) =1729a(9) =1891a(10) =2701a(11) =2821a(12) =3281a(13) =3367a(14) =3751a(15) =5551a(16) =6643a(17) =7381a(18) =8401a(19) =8695a(20) =8911a(21) =10585a(22) =11011a(23) =12403a(24) =12991a(25) =14383a(26) =15203a(27) =15251a(28) =15841a(29) =15863