[r-t] FCH

Robin Woolley robin at robinw.org.uk
Thu May 17 07:04:09 UTC 2012


there are 720 different FCH for major methods which divide into two - 
positive and negative.

each half divides into groups of size mod7 except for rounds (the 'spurious' 
group A) and group Z - 546732 and 763245

Unlike Graham, I have a nicely printed copy which I derived myself - but it 
can be found also in ?John Ridley's? CC book.

If any one is interested, I'll put it on my web-site.


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