[seqfan] Re: A045655

David Wilson davidwwilson at comcast.net
Sat Dec 31 21:52:24 CET 2011

I authored A045655 back in the day.

Ostensibly, a(n) is the number of 2n-bead necklaces that are 
rotationally equivalent to their reversed complements.
Clearly the description balanced is redundant, since such a necklace 
must have n black and n white beads.

However, I am having difficulty generating the sequence, so it is either 
incorrect, ill-described, or my programming
skills are waning.

So I am turning to the experts for help.

On 12/31/2011 10:16 AM, GEOFFREY CRITZER wrote:
> David
> I am interested in your sequence A045655.  I do not understand your 
> description.
> Any reply is greatly appreciated.
> Best Regards
> Geoffrey

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