Numbers k such that k and k^2 use only the digits 0, 2, 3, 5 and 9.

Terms

a(0) =0a(1) =3a(2) =5a(3) =23a(4) =30a(5) =50a(6) =55a(7) =95a(8) =230a(9) =235a(10) =300a(11) =305a(12) =500a(13) =503a(14) =505a(15) =550a(16) =950a(17) =995a(18) =2300a(19) =2350a(20) =3000a(21) =3005a(22) =3050a(23) =3055a(24) =5000a(25) =5003a(26) =5005a(27) =5023a(28) =5030a(29) =5050