Fermat pseudoprimes to base 2 divisible by 15.

Terms

a(0) =645a(1) =1905a(2) =18705a(3) =55245a(4) =62745a(5) =72885a(6) =215265a(7) =451905a(8) =831405a(9) =1246785a(10) =1472505a(11) =1489665a(12) =1608465a(13) =1815465a(14) =2077545a(15) =2113665a(16) =2882265a(17) =4535805a(18) =6135585a(19) =6242685a(20) =8322945a(21) =9063105a(22) =9816465a(23) =16263105a(24) =18137505a(25) =19523505a(26) =53661945a(27) =63560685a(28) =81612105a(29) =81722145