Decimal expansion of Pi/21.

Terms

a(0) =1a(1) =4a(2) =9a(3) =5a(4) =9a(5) =9a(6) =6a(7) =5a(8) =0a(9) =1a(10) =7a(11) =0a(12) =9a(13) =4a(14) =2a(15) =5a(16) =3a(17) =5a(18) =1a(19) =6a(20) =4a(21) =8a(22) =8a(23) =7a(24) =7a(25) =8a(26) =0a(27) =1a(28) =5a(29) =6