Squares n with digit 1 that remain positive square after omitting all 1's from n.

Terms

a(0) =361a(1) =1225a(2) =11025a(3) =15129a(4) =15625a(5) =21025a(6) =23104a(7) =36100a(8) =105625a(9) =119025a(10) =122500a(11) =171396a(12) =251001a(13) =262144a(14) =311364a(15) =1010025a(16) =1050625a(17) =1071225a(18) =1102500a(19) =1113025a(20) =1134225a(21) =1151329a(22) =1311025a(23) =1512900a(24) =1562500a(25) =2102500a(26) =2111209a(27) =2175625a(28) =2310400a(29) =3610000