Strong pseudoprimes (base 2) that become prime when two is added.

Terms

a(0) =253241a(1) =280601a(2) =580337a(3) =1207361a(4) =1678541a(5) =1909001a(6) =2419385a(7) =5173601a(8) =16324001a(9) =18073817a(10) =22849481a(11) =25080101a(12) =43363601a(13) =60155201a(14) =67194401a(15) =82870517a(16) =85519337a(17) =97924217a(18) =100943201a(19) =102004421a(20) =104857391a(21) =116090081a(22) =128987429a(23) =134696801a(24) =135969401a(25) =145348529