In the binary race of Pi, where the race leader changes.

Terms

a(0) =1a(1) =7a(2) =17a(3) =33a(4) =6359a(5) =6363a(6) =6371a(7) =6385a(8) =6443a(9) =6445a(10) =6451a(11) =6465a(12) =6525a(13) =6527a(14) =6563a(15) =6565a(16) =6569a(17) =6571a(18) =6573a(19) =6693a(20) =6917a(21) =6923a(22) =6925a(23) =6965a(24) =6967a(25) =7003a(26) =7011a(27) =7337a(28) =7365a(29) =7367