An Interview with OEIS's Neil Sloane

    We like to include sequences that appear on IQ tests. It’s always
    been one of my goals to help people do these silly tests.

Yessssss! Those damn "IQ" questions:

http://spikedmath.com/062.html

We also get them with some regularity in Freenode's ##math. It's a FAQ. "Here's a list of numbers, what's the formula?" Sometimes we're able to send the person to Sloane's and be done with it.

Other times...