perplexus.info :: Just Math : An Octagonal Problem

An Octagonal Problem (Posted on 2006-06-13)

An octagonal number is a number that is represented by the set of figures given below.

A certain octagonal number is the sum of the squares of three terms in an arithmetic sequence with a common difference of 704. What is that octagonal number?

See The Solution Submitted by K Sengupta

Rating: 5.0000 (1 votes)

Comments: ( You must be logged in to post comments.)

Subject	Author	Date
re: For starters -- computer solution (spoiler)	Charlie	2006-06-13 11:07:39
For starters	e.g.	2006-06-13 09:56:52

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