Smallest prime p such that there is a gap of exactly 2*prime(n) between p and the next prime.

Terms

a(0) =7a(1) =23a(2) =139a(3) =113a(4) =1129a(5) =2477a(6) =1327a(7) =30593a(8) =81463a(9) =44293a(10) =34061a(11) =404597a(12) =265621a(13) =155921a(14) =1100977a(15) =1098847a(16) =1349533a(17) =3117299a(18) =6958667a(19) =10343761a(20) =6034247a(21) =49269581a(22) =83751121a(23) =39389989a(24) =166726367a(25) =107534587a(26) =232423823a(27) =253878403a(28) =327966101a(29) =519653371