[seqfan] Re: binary expansion 1+0*

[franktaw at netscape.net]

You seem to be missing some numbers: the powers of 2 (other than 1, 
which you have).  When you put them in, the sequence is A023758.

Franklin T. Adams-Watters

-----Original Message-----
From: Joerg Arndt <arndt at jjj.de>

starts as
1, 3, 6, 7, 12, 14, 15, 24, 28, 30, 31, 48, 56, 60, 62, 63, 96, 112, 
120, 124,
126, 127,

Numbers of the form (2^k-1)*2^j for k>=1 and j>=0

Interesting(?) property:
For all a(n)>1 the set (2^j)%a(n)
consists only of the powers of two.