n-gon sequence

[Jon Perry]

Is this sequence known? I've only worked out the first 2 terms of each.

The maximum number of intersections of k n-gons.

e.g. with triangles, the sequence opens 0,6 - my next term is 16, but this
is without proof.

For the general n-gon, the sequence always opens 0,2n

Jon Perry
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http://www.users.globalnet.co.uk/~perry/maths
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