Strong pseudoprimes to base 9.

Terms

a(0) =91a(1) =121a(2) =671a(3) =703a(4) =1541a(5) =1729a(6) =1891a(7) =2821a(8) =3281a(9) =3367a(10) =3751a(11) =5551a(12) =7381a(13) =8401a(14) =8911a(15) =10585a(16) =11011a(17) =12403a(18) =14383a(19) =15203a(20) =16471a(21) =16531a(22) =18721a(23) =19345a(24) =23521a(25) =24661a(26) =24727a(27) =28009a(28) =29341a(29) =30857