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From: David Entwistle <qnivq.ragjvfgyr@ogvagrearg.pbz>
Newsgroups: rec.puzzles
Subject: Re: Add the numbers in a 9x9 multiplication Table
Date: Mon, 9 Jun 2025 11:25:49 -0000 (UTC)
Organization: A noiseless patient Spider
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On Fri, 6 Jun 2025 15:25:51 -0000 (UTC), B. Pym wrote:

> B. Pym wrote:
> 

Given the sequence 0, 1, 9, 36, 100, 225, 441... it is possible to 
calculate the polynomial expression for the sum of the entries in a 
multiplication table of n rows and n columns. 2025 is the 9th entry in 
this sequence as it is the sum for the entries in a 9 x 9 multiplication 
table.

Can you calculate that function?

It'd be interesting to see how the various functions perform with respect 
to that polynomial for large n. They may well implement it.

If you don't know how to proceed, there is a pointer below to the method I 
used (any other methods would be of interest):

V hfrq gur zrgubq bs svavgr qvssreraprf.



-- 
David Entwistle