Palindromic numbers in bases 4 and 9 written in base 10.

Terms

a(0) =0a(1) =1a(2) =2a(3) =3a(4) =5a(5) =10a(6) =255a(7) =273a(8) =373a(9) =546a(10) =2550a(11) =2730a(12) =2910a(13) =16319a(14) =23205a(15) =54215a(16) =1181729a(17) =1898445a(18) =2576758a(19) =3027758a(20) =3080174a(21) =4210945a(22) =9971750a(23) =163490790a(24) =2299011170a(25) =6852736153a(26) =6899910553a(27) =160142137430a(28) =174913133450a(29) =204283593150