Squarefree base-2 Fermat pseudoprimes divisible by a Wieferich prime.

Terms

a(0) =3581761a(1) =5173169a(2) =5968873a(3) =23872213a(4) =36974341a(5) =53711113a(6) =107023281a(7) =427294141a(8) =490950461a(9) =526359289a(10) =546649741a(11) =550230409a(12) =753532781a(13) =803264281a(14) =836683849a(15) =1115578101a(16) =1168492417a(17) =1193557093a(18) =1540454761a(19) =1632785701a(20) =2129304997a(21) =2295209281a(22) =2677147201