#ATTENDANCE QUIZ FOR LECTURE 11 of Dr. Z.'s Math454(02) Rutgers University

# Please Edit this .txt page with Answers

#Email  ShaloshBEkhad@gmail.com 
#Subject: p11
#with an attachment called
#p11FirstLast.txt
#(e.g. p11DoronZeilberger.txt)

#Right after finishing watching the lecture but no later than Oct. 13, 2020, 8:00pm


THE NUMBER OF ATTENDANCE QUESTIONS WERE: 3 (stopped watching after 1 hour 14 minutes)

PLEASE LIST ALL THE QUESTIONS FOLLOWED, AFTER EACH BY THE ANSWER

1. Who was Dr. Z's next door neighbor in 1980?
What did he reply to Dr. Z when asked "How many ways to break up Russian dolls"?

Dr. Z's next door neighbor was the mathematician Joel Spencer. When asked "how many ways to break up Russian dolls" by Dr. Z, he replied "This is a Stirling question. It rings a bell."

2. What is the A number in the OEIS of this sequence: [1,2,5,15,52,203,877,4140]?

A000110

3. Which of Z(r) except r=1 are in the OEIS?
For each of them, list the A-number.

r = 2	A047797
r >= 3 not in the OEIS.