Squares which when written backwards remain square (final 0's excluded).

Terms

a(0) =1a(1) =4a(2) =9a(3) =121a(4) =144a(5) =169a(6) =441a(7) =484a(8) =676a(9) =961a(10) =1089a(11) =9801a(12) =10201a(13) =10404a(14) =10609a(15) =12321a(16) =12544a(17) =12769a(18) =14641a(19) =14884a(20) =40401a(21) =40804a(22) =44521a(23) =44944a(24) =48841a(25) =69696a(26) =90601a(27) =94249a(28) =96721a(29) =698896