Digits of n appear in n^3.

Terms

a(0) =0a(1) =1a(2) =4a(3) =5a(4) =6a(5) =9a(6) =10a(7) =11a(8) =12a(9) =21a(10) =24a(11) =25a(12) =29a(13) =32a(14) =33a(15) =34a(16) =39a(17) =40a(18) =44a(19) =49a(20) =50a(21) =51a(22) =54a(23) =55a(24) =56a(25) =59a(26) =60a(27) =61a(28) =64a(29) =65