Prime numbers that are the sum of the divisors of some n.

Terms

a(0) =3a(1) =7a(2) =13a(3) =31a(4) =127a(5) =307a(6) =1093a(7) =1723a(8) =2801a(9) =3541a(10) =5113a(11) =8011a(12) =8191a(13) =10303a(14) =17293a(15) =19531a(16) =28057a(17) =30103a(18) =30941a(19) =86143a(20) =88741a(21) =131071a(22) =147073a(23) =292561a(24) =459007a(25) =492103a(26) =524287a(27) =552793a(28) =579883a(29) =598303