Smallest k such that both k-n and k+n are primes and there are no primes between them.

Terms

a(0) =2a(1) =4a(2) =9a(3) =26a(4) =93a(5) =144a(6) =205a(7) =120a(8) =1839a(9) =532a(10) =897a(11) =1140a(12) =1681a(13) =2490a(14) =2985a(15) =4312a(16) =5607a(17) =1344a(18) =9569a(19) =30612a(20) =19353a(21) =16162a(22) =15705a(23) =81486a(24) =28253a(25) =31932a(26) =19635a(27) =35644a(28) =82101a(29) =44322