a(n) is the smallest prime(i) such that (prime(i) - prime(j))/(i - j) = prime(n) with i > j.

Terms

a(0) =5a(1) =11a(2) =29a(3) =97a(4) =641a(5) =1373a(6) =2591a(7) =4327a(8) =8009a(9) =19661a(10) =36451a(11) =134581a(12) =38543a(13) =172969a(14) =212777a(15) =268403a(16) =1784171a(17) =860239a(18) =1562053a(19) =6085103a(20) =6958813a(21) =3422971a(22) =5103029a(23) =14723567a(24) =47973451a(25) =38394329a(26) =36271783a(27) =75837497a(28) =59160181a(29) =47326919