Initial digits of squares.

Terms

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