Numbers k such that decimal expansion of k^2 contains k as a substring and k does not end in 0.

Terms

a(0) =1a(1) =5a(2) =6a(3) =25a(4) =76a(5) =376a(6) =625a(7) =3792a(8) =9376a(9) =14651a(10) =90625a(11) =109376a(12) =495475a(13) =505025a(14) =890625a(15) =971582a(16) =1713526a(17) =2890625a(18) =4115964a(19) =5133355a(20) =6933808a(21) =7109376a(22) =10050125a(23) =12890625a(24) =48588526a(25) =50050025a(26) =66952741a(27) =87109376a(28) =88027284a(29) =88819024