A108850 Number of 1's in the binary expansion of the repunits.

0, 1, 3, 6, 6, 9, 8, 10, 12, 18, 15, 16, 21, 17, 20, 23, 28, 33, 30, 35, 34, 38, 39, 39, 37, 39, 44, 47, 51, 48, 50, 48, 59, 62, 55, 55, 56, 62, 60, 64, 66, 64, 68, 62, 77, 76, 78, 76, 76, 73, 83, 81, 86, 105, 89, 94, 94, 103, 97, 93, 89, 90, 105, 109, 105, 104, 102, 106, 107