Palindromic in bases 7 and 29.

Terms

a(0) =0a(1) =1a(2) =2a(3) =3a(4) =4a(5) =5a(6) =6a(7) =8a(8) =16a(9) =24a(10) =150a(11) =300a(12) =5952a(13) =7752a(14) =7955a(15) =9755a(16) =9958a(17) =11904a(18) =13704a(19) =13907a(20) =14110a(21) =15707a(22) =15910a(23) =392850a(24) =751043a(25) =4585544a(26) =12737804a(27) =12828748a(28) =16380296a(29) =19289406