Jason (jcreed) wrote,

Epic lulz on mathoverflow.

Guess the next term in the following sequence:

π/2, π/2, π/2, π/2, π/2, π/2, π/2, ?

What's that you say? π/2? Ahahaha. No, I'm sorry, nice try, but the answer is

π(1/2 - 6879714958723010531/935615849440640907310521750000).

According to the mathoverflow comment, this seems to have been originally reported as a bug in mathematica, but it was later discovered that the math involved (an integral such that if you plug in N=0,1,2,3,4,5,6 you get π/2, but for N=7 you get the above monster) is actually that weird.

This is like a way more cruel puzzle than the other high-watermark weird-yet-ultimately-sorta-reasonable sequence puzzle that I know of, which is:

Guess the next term in the following sequence:

0, 1, 2, 720!, ?

(where the ! is indeed a factorial)
Tags: math, mathoverflow

  • (no subject)

    Very nearly reported a bug against firefox's SVG rendering. The following example glitches weirdly if you change ".border" to "svg" in the CSS:…

  • (no subject)

    The key to getting the java plugin working with firefox on debian for me was the following page:…

  • (no subject)

    Here is a neat solution to a problem I often have, which is so simple I should have figured it out long ago. Problem: I have exactly three zillion…

  • Post a new comment


    Anonymous comments are disabled in this journal

    default userpic

    Your reply will be screened

    Your IP address will be recorded