Squares whose reversal is also a square.

Terms

a(0) =0a(1) =1a(2) =4a(3) =9a(4) =100a(5) =121a(6) =144a(7) =169a(8) =400a(9) =441a(10) =484a(11) =676a(12) =900a(13) =961a(14) =1089a(15) =9801a(16) =10000a(17) =10201a(18) =10404a(19) =10609a(20) =12100a(21) =12321a(22) =12544a(23) =12769a(24) =14400a(25) =14641a(26) =14884a(27) =16900a(28) =40000a(29) =40401