Squares in A111153.

Terms

a(0) =4a(1) =25a(2) =169a(3) =289a(4) =361a(5) =529a(6) =961a(7) =2809a(8) =5041a(9) =7921a(10) =12769a(11) =16129a(12) =24649a(13) =26569a(14) =27889a(15) =32761a(16) =38809a(17) =52441a(18) =120409a(19) =139129a(20) =160801a(21) =167281a(22) =175561a(23) =201601a(24) =237169a(25) =253009a(26) =259081a(27) =273529a(28) =292681a(29) =316969