Decimal expansion of Pi written as a sequence of positive integers avoiding duplicates.

Terms

a(0) =3a(1) =1a(2) =4a(3) =15a(4) =9a(5) =2a(6) =6a(7) =5a(8) =35a(9) =8a(10) =97a(11) =93a(12) =23a(13) =84a(14) =62a(15) =64a(16) =33a(17) =83a(18) =27a(19) =950a(20) =28a(21) =841a(22) =971a(23) =69a(24) =39a(25) =937a(26) =510a(27) =58a(28) =20a(29) =974