Pseudoprimes to base 10.

Terms

a(0) =9a(1) =33a(2) =91a(3) =99a(4) =259a(5) =451a(6) =481a(7) =561a(8) =657a(9) =703a(10) =909a(11) =1233a(12) =1729a(13) =2409a(14) =2821a(15) =2981a(16) =3333a(17) =3367a(18) =4141a(19) =4187a(20) =4521a(21) =5461a(22) =6533a(23) =6541a(24) =6601a(25) =7107a(26) =7471a(27) =7777a(28) =8149a(29) =8401