Base-6 palindromes that start with 3.

Terms

a(0) =3a(1) =21a(2) =111a(3) =117a(4) =123a(5) =129a(6) =135a(7) =141a(8) =651a(9) =693a(10) =735a(11) =777a(12) =819a(13) =861a(14) =3891a(15) =3927a(16) =3963a(17) =3999a(18) =4035a(19) =4071a(20) =4113a(21) =4149a(22) =4185a(23) =4221a(24) =4257a(25) =4293a(26) =4335a(27) =4371a(28) =4407a(29) =4443