> #Attendence Q1:
> #Is this in the OEIS, including 3, and what is A number?
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> #YES, A198633
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> #Without 3, what is the OEIS A number?
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> #A79
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> #Is the King tour mentioned in the OEIS in our meaning?
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> #YES. 
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> 
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> #Attendence Q2.
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> #How many members of Cn(n) are there with an Even number of 1s 
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> #EvCn(1):=0
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> #EvCn(2):=1
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> #EvCn(3):=3
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> #EvCn(4):=7
;
> #EvCn(5):=15
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> #EvCn(6):=31
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> #The answer is 2^(n-1)-1
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> #and it's in the oeis, A225
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> #How many are there with a number of 1's that is divisible by 4?
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> #for Cn(n), n from 1..n
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> #the sequence is 0,0,0,1,5,15,35,70,126, 
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> #binomial(n,4)
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> #A332
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> 
;
> #Attendence Q3:
#List of the Neighbours of [1,1,1,1,1] in Bn(5)
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> S:= Bn(5)[1][32]
Typesetting:-mprintslash([(S := {16, 24, 28, 30, 31})],[{16, 24, 28, 30, 31}])

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> {seq(Bn(5)[2][i], i in S)}
{[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]}

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> #How many neighbours does [1,1,1,1...,1] (1 repeats 10^100 times )
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> #in Bn(10^100) have? 
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> #nops(Bn(10^100)[1][2^1000])
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> 
;
> #Attendence Q4:
> #Is this sequence in OEIS?
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> #A318109
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> 
;
> #Attendence Q5:
> #Is this sequence in OEIS and what is the A number? 
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> #A172
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> #This is Franel number a(n) = Sum_{k = 0..n} binomial(n,k)^3.
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> #It mentions the diagonal sequence. 
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> #
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> 
;