Powers of fourth root of 10 rounded down.

Terms

a(0) =1a(1) =1a(2) =3a(3) =5a(4) =10a(5) =17a(6) =31a(7) =56a(8) =100a(9) =177a(10) =316a(11) =562a(12) =1000a(13) =1778a(14) =3162a(15) =5623a(16) =10000a(17) =17782a(18) =31622a(19) =56234a(20) =100000a(21) =177827a(22) =316227a(23) =562341a(24) =1000000a(25) =1778279a(26) =3162277a(27) =5623413a(28) =10000000a(29) =17782794