Numbers k such that k^2 contains only digits {1,2,5}.

Terms

a(0) =1a(1) =5a(2) =11a(3) =15a(4) =35a(5) =39a(6) =235a(7) =335a(8) =461a(9) =715a(10) =1235a(11) =1585a(12) =2261a(13) =2285a(14) =3335a(15) =12335a(16) =33335a(17) =33989a(18) =34965a(19) =72285a(20) =123335a(21) =333335a(22) =1101011a(23) =1233335a(24) =3333335a(25) =11054965a(26) =12333335a(27) =14579285a(28) =33333335a(29) =105934485