pabs at cantab.net
Sun Oct 24 10:46:10 UTC 2004
Philip Saddleton <pabs at cantab.net> wrote at 19:30:47 on Fri, 22 Oct 2004
>Can someone provide sets of 42 extents of spliced Doubles (symmetrical
>single-hunt Plain) with the following properties?
No one has answered this yet.
>a) The 177 methods with 3- or 4-lead courses (excluding 145 lead ends),
>with a plain lead of each method.
I've done this, with a few extents to spare.
>b) The 220 methods if 145 lead ends are included, all plain leads.
Almost, but is it possible to include either of these two in such
Montgomeryshire Place: 188.8.131.52.5 le23
Cathedral Place: 184.108.40.206.5 le23
The problem is the four blows at front and back, which means that 2 or 4
at the lead end does not produce a legitimate method, and 1 gives a
2-lead course. There are 2-lead splices with the methods with 345 at the
half-lead, but these cannot be joined into an extent. There is also a
4-lead splice between the two, but this doesn't help.
>c) The 282 methods with Differential Hunters included, again all plain
That should be 283.
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