Talk:Centered hexagonal number

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Mathematics rating:
Start Class
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 Field: Number theory

The difference between (2n)2 and the nth centered hexagonal number is a number of the form 3n2 + 3n − 1, - is this statement correct?--Booradleyp (talk) 11:22, 31 December 2011 (UTC)

Testing / finding the root[edit]

This formula will work to find the root of a centred hexagonal number, would it be useful to add to the article?

n = \frac{1}{2}\left({\sqrt{8\times\frac{x-1}{6}+1}+1}\right)

Where x is the hexagonal number and n is the root to be found. Dobz116 (talk) 11:25, 29 August 2011 (UTC)