Is there any need for a new sequence that could be defined as {A023758} - {A000079} ? --Graeme McRae, Palmdale, CA, Sent from my iPhone On Mar 22, 2010, at 11:51 AM, Joerg Arndt <arndt at jjj.de> wrote: > I erred, I wanted to exclude the powers of 2. > The pattern is 11+0* (and the initial 1 has > to be omitted in my seq). > > Thanks for correcting! >