Last term of prime quadruples.

Terms

a(0) =13a(1) =19a(2) =109a(3) =199a(4) =829a(5) =1489a(6) =1879a(7) =2089a(8) =3259a(9) =3469a(10) =5659a(11) =9439a(12) =13009a(13) =15649a(14) =15739a(15) =16069a(16) =18049a(17) =18919a(18) =19429a(19) =21019a(20) =22279a(21) =25309a(22) =31729a(23) =34849a(24) =43789a(25) =51349a(26) =55339a(27) =62989a(28) =67219a(29) =69499