Fourth powers of palindromes.

Terms

a(0) =0a(1) =1a(2) =16a(3) =81a(4) =256a(5) =625a(6) =1296a(7) =2401a(8) =4096a(9) =6561a(10) =14641a(11) =234256a(12) =1185921a(13) =3748096a(14) =9150625a(15) =18974736a(16) =35153041a(17) =59969536a(18) =96059601a(19) =104060401a(20) =151807041a(21) =214358881a(22) =294499921a(23) =395254161a(24) =519885601a(25) =671898241