Numbers without 3 consecutive equal binary digits.
0, 1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 13, 18, 19, 20, 21, 22, 25, 26, 27, 36, 37, 38, 41, 42
1 seqfan posts
Fri Nov 13 01:02:48 CET 2009 [seqfan] Delays in doing updates (was Problem with algorithm in A063037)