#ATTENDANCE QUIZ FOR LECTURE 17 of Dr. Z.'s Math454(02) Rutgers University

# Please Edit this .txt page with Answers

#Email  ShaloshBEkhad@gmail.com 
#Subject: p17
#with an attachment called
#p17FirstLast.txt
#(e.g. p17DoronZeilberger.txt)

#Right after finishing watching the lecture but no later than Nov. 3, 2020, 8:00pm


THE NUMBER OF ATTENDANCE QUESTIONS WERE: 5

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

1) 
3,4,8,16,32,64,128,256,512
i) Is this in the OEIS (including the 3 at the beginning) what is the A number?
Yes, A198633
ii) Without the beginning 3 is it in the OEIS, what is the A number?
Yes, A000079
iii) Is the king tours mentioned in the OEIS in our meaning?
No, it isn't the same King's Tour.

2)
1,4,12,32,80
(i) How many members of Cn(n) are there with an even number of 1's
n-1
(ii) How many are there with a number of 1's that is divisible by 4
n-1

3)
(i) List of the neighbors of [1,1,1,1,1] in Bn(5)
[0,1,1,1,1],[1,0,1,1,1],[1,1,0,1,1],[1,1,1,0,1],[1,1,1,1,0]
(ii) How many neighbors does [1,1,1,1,...,1] (1 repeated 10^100 times) in Bn(10^1000) have?
10^1000

4) Is this sequence in the oeis?
4,46,652,10186,168304,2884456,50723824...
Yes, A318109

5) What is the A-number of this sequence? Is that the main reason why it is there? 
Is the fact that it is the diagonal sequence of 1/(1-1-x-y-z+4*x*y*z) mentioned there?
2,10,56,346,2252,15184,104960,739162,5280932, ...

A000172. It is not the main reason why it is there but it is mentioned in a comment by Gheorghe Coserea on July 4, 2018.