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
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)