Numbers n whose square can be represented as a repdigit number in some base less than n.

Terms

a(0) =11a(1) =20a(2) =39a(3) =40a(4) =49a(5) =78a(6) =133a(7) =247a(8) =494a(9) =543a(10) =1086a(11) =1218a(12) =1629a(13) =1651a(14) =1729a(15) =2172a(16) =2289a(17) =2715a(18) =3097a(19) =3258a(20) =3458a(21) =3801a(22) =4171a(23) =4344a(24) =4503a(25) =4578a(26) =4887a(27) =5187a(28) =5430a(29) =6194