Numbers k such that k^2 contains only digits {0,1,8}, not ending with zero.

Terms

a(0) =1a(1) =9a(2) =109a(3) =901a(4) =1009a(5) =9001a(6) =10009a(7) =10401a(8) =90001a(9) =100009a(10) =100901a(11) =900001a(12) =1000009a(13) =1004001a(14) =8954391a(15) =9000001a(16) =10000009a(17) =10009001a(18) =34351141a(19) =90000001a(20) =100000009a(21) =100040001a(22) =900000001a(23) =1000000009a(24) =1000090001a(25) =3163554991a(26) =9000000001a(27) =10000000009a(28) =10000400001