As you really ought to know, a domino is a tile with two numbers printed 
on it. Aside from the fact that people try balancing them and then 
knocking them over, you can play various games that involve arranging 
dominos end-to-end such that adjacent ends have identical numbers. But 
given a limited number of dominos, there is presumably only a certain 
number of ways of doing this.

Now it really sounds like there ought to be a mathematical theory 
underlying this idea. But I have no clue what it's called...

-- 
http://blog.orphi.me.uk/
http://www.zazzle.com/MathematicalOrchid*

Post a reply to this message