Palindromic numbers in bases 3 and 9 written in base 10.

Terms

a(0) =0a(1) =1a(2) =2a(3) =4a(4) =8a(5) =10a(6) =20a(7) =40a(8) =80a(9) =82a(10) =91a(11) =100a(12) =164a(13) =173a(14) =182a(15) =328a(16) =364a(17) =400a(18) =656a(19) =692a(20) =728a(21) =730a(22) =820a(23) =910a(24) =1460a(25) =1550a(26) =1640a(27) =2920a(28) =3280a(29) =3640