[r-t] FCH

[Robin Woolley]

b.t.w.,

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.

Robin