Strong pseudoprimes to base 15.

Terms

a(0) =1687a(1) =3277a(2) =6541a(3) =14041a(4) =14701a(5) =15409a(6) =25313a(7) =31021a(8) =47461a(9) =49241a(10) =50401a(11) =54241a(12) =58969a(13) =60691a(14) =82733a(15) =88831a(16) =97921a(17) =112141a(18) =115669a(19) =156311a(20) =181901a(21) =186497a(22) =191959a(23) =194221a(24) =219781a(25) =227767a(26) =293281a(27) =294079a(28) =323041a(29) =416641