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Possible Duplicate:
In how many ways can we colour $n$ baskets with $r$ colours?

How many ways are there of coloring $n$ numbers $1, 2, 3, \dots, n$ ($n \ge 2$) in a circle $(C)$ with $p$ colors ($p \ge 2$), such that each number is given one color, and every color isn't used for two adjacent number? Thanks!

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    @sperners: I don't think I've ever seen indistinguishable baskets, but it doesn't matter, since my answer to that question treats them as distinguishable.2012-11-05

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