Upper prime of a difference of 18 between consecutive primes.

Terms

a(0) =541a(1) =1087a(2) =1277a(3) =1399a(4) =1777a(5) =1931a(6) =2179a(7) =2521a(8) =2879a(9) =3821a(10) =3907a(11) =4177a(12) =4391a(13) =4441a(14) =4481a(15) =4621a(16) =4721a(17) =4751a(18) =5077a(19) =5227a(20) =5501a(21) =6029a(22) =6247a(23) =6469a(24) =6547a(25) =6599a(26) =6637a(27) =7177a(28) =7369a(29) =7411