[seqfan] Re: A066411

[franktaw at netscape.net]

If you take your half out the middle, you get a 16-fold increase in 
each part. You have to compute each 8-element subset twice, so overall 
it's an 8-fold improvement.

Franklin T. Adams-Watters

-----Original Message-----
From: William Keith <william.keith at gmail.com>

Note: I was trying to save a factor of half, but the 8-element subsets
would need to be chosen from {0,...,15}, or 7-element subsets from
{1,...,14} with a 0 deliberately inserted at all eight possible 
positions.

William Keith