Numbers n such that m=(n^2+1)/2, p=(m^2+1)/2 and q=(p^2+1)/2 are all prime.

Terms

a(0) =69a(1) =271a(2) =349a(3) =3001a(4) =3399a(5) =4949a(6) =6051a(7) =9101a(8) =9751a(9) =10099a(10) =10149a(11) =11719a(12) =12281a(13) =15911a(14) =22569a(15) =24269a(16) =25201a(17) =25889a(18) =28841a(19) =31979a(20) =37271a(21) =39901a(22) =42109a(23) =44929a(24) =46399a(25) =48321a(26) =50811a(27) =60009a(28) =63659a(29) =63999