Where the prime race among 5k+1, ..., 5k+4 changes leader.

Terms

a(0) =2a(1) =83a(2) =137a(3) =293a(4) =337a(5) =443a(6) =487a(7) =523a(8) =557a(9) =743a(10) =797a(11) =1213a(12) =1277a(13) =1523a(14) =1657a(15) =1733a(16) =1867a(17) =1973a(18) =2027a(19) =2063a(20) =2797a(21) =2833a(22) =2887a(23) =4733a(24) =5227a(25) =5323a(26) =5437a(27) =5503a(28) =5527a(29) =5623