Numbers k such that k and k^2 use only the digits 2, 3, 4, 8 and 9.

Terms

a(0) =2a(1) =3a(2) =22a(3) =222a(4) =288a(5) =482a(6) =483a(7) =943a(8) =2982a(9) =2983a(10) =4832a(11) =4882a(12) =4933a(13) =4938a(14) =4943a(15) =9393a(16) =29832a(17) =29882a(18) =48882a(19) =48933a(20) =48983a(21) =49233a(22) =49338a(23) =49832a(24) =99423a(25) =288832a(26) =298228a(27) =298233a(28) =299832a(29) =482933