[r-t] Plain Bob leadheads

Philip Saddleton cantab at saddleton.org.uk
Sat Feb 20 16:16:45 GMT 2021

On Fri, 2021-02-19 at 15:33 +0100, Martin Bright wrote:
> Proof:  It's enough to prove it in the case h = (2 4 6 .. n n-1 ... 5
> 3) in cycle notation.

Is it? It depends whether 'Plain Bob Lead Heads' means all of them.
It's not true for methods with a 1-lead course, but what if n-1 is not


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