Talk:Centered hexagonal number

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WikiProject Mathematics (Rated Start-class, Low-priority)
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Mathematics rating:
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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?

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

Agree its useful to add a method of calculating the root, I added this before seeing the talk page, using the following formula:

which has fewer operations than the example you've given Ideasman42 (talk) 04:06, 13 August 2017 (UTC)