A032957 Numbers n such that base 7 representation Sum{d(i)*7^i: i=0,1,...,m} has even d(i) for all odd i.

1, 2, 3, 4, 5, 6, 7, 9, 11, 13, 14, 16, 18, 20, 21, 23, 25, 27, 28, 30, 32, 34, 35, 37, 39, 41, 42, 44, 46, 48, 49, 50, 51, 52, 53, 54, 55, 63, 64, 65, 66, 67, 68, 69, 77, 78, 79, 80, 81, 82, 83, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102