Palindromes whose sum of divisors is odd.

Terms

a(0) =2a(1) =4a(2) =8a(3) =9a(4) =121a(5) =242a(6) =484a(7) =676a(8) =10201a(9) =12321a(10) =14641a(11) =20402a(12) =24642a(13) =40804a(14) =44944a(15) =69696a(16) =94249a(17) =698896a(18) =1002001a(19) =1234321a(20) =2004002a(21) =2138312a(22) =2468642a(23) =4008004a(24) =5221225a(25) =6948496a(26) =85099058a(27) =100020001a(28) =102030201a(29) =104060401