Last member of a sexy prime quadruple: value of p+18 such that p, p+6, p+12 and p+18 are all prime.

Terms

a(0) =23a(1) =29a(2) =59a(3) =79a(4) =269a(5) =619a(6) =659a(7) =1109a(8) =1499a(9) =1619a(10) =1759a(11) =1879a(12) =2389a(13) =2689a(14) =3319a(15) =3929a(16) =4019a(17) =5119a(18) =5399a(19) =5449a(20) =5659a(21) =6329a(22) =6379a(23) =9479a(24) =11839a(25) =12119a(26) =12659a(27) =13469a(28) =14639a(29) =14759