a(n)/1000 gives sqrt(n) to 3 places after the decimal point.

Terms

a(0) =1000a(1) =1414a(2) =1732a(3) =2000a(4) =2236a(5) =2449a(6) =2646a(7) =2828a(8) =3000a(9) =3162a(10) =3317a(11) =3464a(12) =3606a(13) =3742a(14) =3873a(15) =4000a(16) =4123a(17) =4243a(18) =4359a(19) =4472a(20) =4583a(21) =4690a(22) =4796a(23) =4899a(24) =5000a(25) =5099a(26) =5196a(27) =5292a(28) =5385a(29) =5477