The Title of the talk was: How to compute Pi by tossing a coin.
Welcome Attendance Quiz (w/o answers)
All the posted answers were good, but the lucky winner (of Richard Stanley's book `Catalan Numbers') is Jakub Stepo
Farewell Attendance Quiz (w/o answers)
All the posted answers were good, but the lucky winner (of Richard Stanley's book `Catalan Numbers') is John Wu (Princeton University)
Challenges: So far my computer (see the above web-page) was only able to find the polynomial describing the number of ways n teams can all play each other and each get r Goals For and r Goals against, for 1 ≤ n ≤ 6. I am pledging to donate 100 dollars to the OEIS in honor of the first person to do it for seven teams, and an additional 200 dollars for eight teams.