Numbers that are both palindromes (A002113) and terms of A072389.

Terms

a(0) =0a(1) =4a(2) =252a(3) =2112a(4) =2772a(5) =6336a(6) =21012a(7) =27072a(8) =42924a(9) =48384a(10) =48984a(11) =63036a(12) =252252a(13) =297792a(14) =407704a(15) =2327232a(16) =2572752a(17) =2747472a(18) =2774772a(19) =2958592a(20) =4457544a(21) =4811184a(22) =6378736a(23) =6396936a(24) =25777752a(25) =27633672a(26) =29344392a(27) =63099036a(28) =63399336a(29) =404080404