Primes p such that p-1 divides 2^p + 2.

Terms

a(0) =2a(1) =3a(2) =11a(3) =251a(4) =5051a(5) =16811a(6) =2025251a(7) =8751251a(8) =16607051a(9) =28257611a(10) =69005051a(11) =78906251a(12) =176775251a(13) =210381251a(14) =372175451a(15) =550427051a(16) =707025251a(17) =854704451a(18) =1866788051a(19) =2441406251a(20) =2605806251a(21) =4249701251a(22) =5469531251a(23) =9304386251a(24) =10315761251a(25) =10915095251