A043421 Numbers n such that number of 0's in base 8 is 1.

8, 16, 24, 32, 40, 48, 56, 65, 66, 67, 68, 69, 70, 71, 72, 80, 88, 96, 104, 112, 120, 129, 130, 131, 132, 133, 134, 135, 136, 144, 152, 160, 168, 176, 184, 193, 194, 195, 196, 197, 198, 199, 200, 208, 216, 224, 232, 240, 248, 257