Fermat pseudoprimes n such that n+1 is prime.

Terms

a(0) =161038a(1) =9115426a(2) =143742226a(3) =665387746a(4) =1105826338a(5) =3434672242a(6) =11675882626a(7) =16732427362a(8) =18411253246a(9) =81473324626a(10) =85898088046a(11) =98730252226a(12) =134744844466a(13) =136767694402a(14) =161097973246a(15) =183689075122a(16) =315554044786a(17) =553588254766a(18) =778581406786