Numbers n such that n multiplied by its reverse yields a fourth power.

Terms

a(0) =1a(1) =4a(2) =9a(3) =121a(4) =484a(5) =676a(6) =2178a(7) =8712a(8) =10000a(9) =10201a(10) =12321a(11) =14641a(12) =40000a(13) =40804a(14) =44944a(15) =69696a(16) =90000a(17) =94249a(18) =698896a(19) =1002001a(20) =1210000a(21) =1234321a(22) =4008004a(23) =4840000a(24) =5221225a(25) =6760000a(26) =6948496a(27) =21780000a(28) =87120000a(29) =100000000