Squares whose largest digit is 5.

Terms

a(0) =25a(1) =225a(2) =1225a(3) =1521a(4) =2025a(5) =2500a(6) =3025a(7) =4225a(8) =5041a(9) =11025a(10) =12544a(11) =13225a(12) =21025a(13) =22500a(14) =24025a(15) =34225a(16) =35344a(17) =42025a(18) =44521a(19) =52441a(20) =55225a(21) =112225a(22) =122500a(23) =133225a(24) =135424a(25) =150544a(26) =151321a(27) =152100a(28) =202500a(29) =212521