Smallest nontrivial extension of n-th palindrome which is a square.

Terms

a(0) =16a(1) =25a(2) =36a(3) =49a(4) =529a(5) =64a(6) =729a(7) =81a(8) =900a(9) =1156a(10) =225a(11) =3364a(12) =441a(13) =55225a(14) =66049a(15) =7744a(16) =8836a(17) =99225a(18) =101124a(19) =111556a(20) =12100a(21) =131044a(22) =14161a(23) =15129a(24) =16129a(25) =17161a(26) =181476a(27) =191844a(28) =2025a(29) =212521