1. What is a 'Lucas

A 'Motzkin' or 'Square'?

Apparently four if you

care to go there.

2. Mind your research as

through mathworld you plod

to remember that every

fourth number is odd

3. Do you know of

the name to which

I refer? Tetrahedral, duffer!

(To mathworld I defer).

4. Here endeth the lesson

thats enough for today.

tea time is at

four, now go play!