Numbers which have more different digits than their squares.

Terms

a(0) =109a(1) =173a(2) =235a(3) =264a(4) =1049a(5) =1235a(6) =1485a(7) =1489a(8) =1490a(9) =1498a(10) =1703a(11) =1730a(12) =1823a(13) =1834a(14) =2107a(15) =2108a(16) =2350a(17) =2357a(18) =2435a(19) =2538a(20) =2581a(21) =2640a(22) =2830a(23) =2978a(24) =2980a(25) =2983a(26) =3114a(27) =3148a(28) =3157a(29) =3408