If p(x) is the x-th prime, then the n-th set of 4 consecutive sexy prime pairs starts at p(a(n)).

Terms

a(0) =345a(1) =821a(2) =823a(3) =825a(4) =1722a(5) =2207a(6) =2771a(7) =3164a(8) =4350a(9) =4751a(10) =6201a(11) =7616a(12) =7686a(13) =8141a(14) =10138a(15) =10140a(16) =10827a(17) =10829a(18) =12217a(19) =12219a(20) =12915a(21) =14128a(22) =14130a(23) =16386a(24) =16746a(25) =21417a(26) =21594a(27) =21724a(28) =21726a(29) =21777