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Posts tagged ‘Graphs’

The On-Line Encyclopedia of Integer Sequences

I was trying to answer this question – how many labeled rooted trees with n nodes are there?

A quick search didn’t find the answer (I’m sure a more detailed search would have). Then I had this idea – find the answer for small values of n, and look in the OEIS. I typed 1,2,9,64 in the search and quickly found the answer (which is n^(n-1) for those interested). I thought about it for a couple of minutes but still hadn’t come up with an answer as to why this is true.

Best Blond Joke Ever

Saw this one a long time ago, but now I finally have a blog so I can spread the fun.

Someone should graph this one. Whoops, they have.

Crappy Graphs

My creation:

Look like it’s graph number 874. Not bad.