a(n) is the smallest prime p such that the gap between p and the next prime is 4*n.

Terms

a(0) =7a(1) =89a(2) =199a(3) =1831a(4) =887a(5) =1669a(6) =2971a(7) =5591a(8) =9551a(9) =19333a(10) =15683a(11) =28229a(12) =19609a(13) =82073a(14) =43331a(15) =89689a(16) =134513a(17) =31397a(18) =212701a(19) =542603a(20) =461717a(21) =544279a(22) =927869a(23) =360653a(24) =396733a(25) =1388483a(26) =2238823a(27) =370261a(28) =5845193a(29) =1895359