Correction:
This table should have read as follows:
2n-gon
where
2n = 4 6 8 10 12 14 16 18 20 22 24 26 28 30 . . .
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g = 1 1 2 2 3 3 4 4 5 5 6 6 7 7 . . .
where g = genus.
--Dan
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It goes without saying that .