Numbers k such that k and k^2 have square decimal digits.

Terms

a(0) =0a(1) =1a(2) =10a(3) =100a(4) =1000a(5) =1049a(6) =10000a(7) =10490a(8) =100000a(9) =100499a(10) =104900a(11) =1000000a(12) =1004990a(13) =1049000a(14) =10000000a(15) =10004999a(16) =10049900a(17) =10490000a(18) =100000000a(19) =100049990a(20) =100499000a(21) =104900000a(22) =1000000000a(23) =1000049999a(24) =1000499900a(25) =1004990000a(26) =1044049999a(27) =1049000000a(28) =10000000000a(29) =10000499990