Squares with digital root 7.

Terms

a(0) =16a(1) =25a(2) =169a(3) =196a(4) =484a(5) =529a(6) =961a(7) =1024a(8) =1600a(9) =1681a(10) =2401a(11) =2500a(12) =3364a(13) =3481a(14) =4489a(15) =4624a(16) =5776a(17) =5929a(18) =7225a(19) =7396a(20) =8836a(21) =9025a(22) =10609a(23) =10816a(24) =12544a(25) =12769a(26) =14641a(27) =14884a(28) =16900a(29) =17161