Palindromic squares.

Terms

a(0) =0a(1) =1a(2) =4a(3) =9a(4) =121a(5) =484a(6) =676a(7) =10201a(8) =12321a(9) =14641a(10) =40804a(11) =44944a(12) =69696a(13) =94249a(14) =698896a(15) =1002001a(16) =1234321a(17) =4008004a(18) =5221225a(19) =6948496a(20) =100020001a(21) =102030201a(22) =104060401a(23) =121242121a(24) =123454321a(25) =125686521a(26) =400080004a(27) =404090404a(28) =522808225a(29) =617323716