Least prime p such that 2p+1, 2p+3,..., 2p+2n+1 are not prime.

Terms

a(0) =7a(1) =31a(2) =59a(3) =59a(4) =263a(5) =263a(6) =263a(7) =691a(8) =977a(9) =1091a(10) =1487a(11) =1487a(12) =2417a(13) =2797a(14) =4987a(15) =4987a(16) =6427a(17) =9811a(18) =9811a(19) =12739a(20) =12739a(21) =12739a(22) =17033a(23) =17033a(24) =17033a(25) =17033a(26) =17033a(27) =17033a(28) =67261a(29) =77969