A039069 Numbers n such that representation in base 8 has same number of 3's and 6's.

0, 1, 2, 4, 5, 7, 8, 9, 10, 12, 13, 15, 16, 17, 18, 20, 21, 23, 30, 32, 33, 34, 36, 37, 39, 40, 41, 42, 44, 45, 47, 51, 56, 57, 58, 60, 61, 63, 64, 65, 66, 68, 69, 71, 72, 73, 74, 76, 77, 79, 80, 81, 82, 84, 85, 87, 94, 96, 97, 98, 100, 101, 103, 104, 105, 106, 108, 109