Palindromic numbers in bases 4 and 6 written in base 10.

Terms

a(0) =0a(1) =1a(2) =2a(3) =3a(4) =5a(5) =21a(6) =55a(7) =215a(8) =819a(9) =1885a(10) =7373a(11) =7517a(12) =12691a(13) =14539a(14) =69313a(15) =196606a(16) =1856845a(17) =3314083a(18) =5494725a(19) =33348861a(20) =223892055a(21) =231755895a(22) =322509617a(23) =3614009815a(24) =4036503055a(25) =4165108015a(26) =9233901154a(27) =9330794722a(28) =12982275395a(29) =107074105033