We live but to serve:

“Mr. Derbyshire—Thank you for providing a web site

that I am sure will be taking

up too much of my time. But the payoff is incredible! After only a few

random selections, I now know that all nonnegative integers are either evil

or odious. (A001969 & A000069). Is there a better way to start a

conversation in a bar?”

Well, there probably are better ways… but thanks anyway.