Primes p such that 10p+1 divides 2^p-1.

Terms

a(0) =43a(1) =487a(2) =547a(3) =571a(4) =883a(5) =1459a(6) =1663a(7) =1723a(8) =2539a(9) =3319a(10) =3511a(11) =4903a(12) =5107a(13) =5431a(14) =6199a(15) =6367a(16) =8011a(17) =8599a(18) =9007a(19) =9391a(20) =9511a(21) =10111a(22) =11119a(23) =11959a(24) =12379a(25) =12703a(26) =13291a(27) =13339a(28) =13999a(29) =14083