a(n) = r-th prime of the form (p-q)/(q-r) with r=prime(n+1), q=prime(n+2), and primes p > q.

Terms

a(0) =13a(1) =17a(2) =47a(3) =107a(4) =179a(5) =311a(6) =401a(7) =199a(8) =761a(9) =367a(10) =1229a(11) =1049a(12) =1499a(13) =701a(14) =739a(15) =1979a(16) =1069a(17) =2543a(18) =2399a(19) =1447a(20) =3209a(21) =1619a(22) =4889a(23) =4583a(24) =4373a(25) =4703a(26) =4451a(27) =5351a(28) =5669a(29) =6329