Pseudoprimes n to base 2 such that n-2 and n-4 are primes.

Terms

a(0) =645a(1) =33153a(2) =129921a(3) =157641a(4) =451905a(5) =656601a(6) =1608465a(7) =3020361a(8) =3370641a(9) =6212361a(10) =19092921a(11) =34487601a(12) =38790753a(13) =681942801a(14) =940492785a(15) =1109260545a(16) =1574300001a(17) =2693081973a(18) =3037396461a(19) =4160578521a(20) =6424683105a(21) =7384487181a(22) =13671360561a(23) =14966031345a(24) =15731001105