Numbers k such that k and k^2 use only the digits 0, 1, 2, 3 and 6.

Terms

a(0) =0a(1) =1a(2) =6a(3) =10a(4) =11a(5) =60a(6) =100a(7) =101a(8) =106a(9) =110a(10) =111a(11) =361a(12) =600a(13) =601a(14) =1000a(15) =1001a(16) =1006a(17) =1010a(18) =1011a(19) =1060a(20) =1100a(21) =1101a(22) =1106a(23) =1110a(24) =1631a(25) =3606a(26) =3610a(27) =6000a(28) =6001a(29) =6010