The 166-th triangular number

 
 

An integer of the form   T_{n} \; = \; n \, (n + 1)/2   is called a Triangular number.

 

The 166-th triangular number is :      T_{166} \; = \; 13861

 

22^3 + 14^3 + 7^3 + 5^3 + 1^3 \; = \; 18^3 + 18^3 + 13^3 \; = \; 13861

and

22 + 14 + 7 + 5 + 1 \; = \; 18 + 18 + 13 \; = \; 7^2

 
 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

Advertisements

About benvitalis

math grad - Interest: Number theory
This entry was posted in Number Puzzles and tagged . Bookmark the permalink.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s