Q1. THE FIRST ATTENDANCE QUESTION WAS:
i. explicit expression for a0=0.. an=1
ii explicit expression for an=n3

A1. MY ANSWER TO THE FIRST ATTENDANCE QUESTION IS:
i -x^3/(x-1)
ii x*(x^2+4*x+1)/(x-1)^4


Q2. THE  SECOND ATTENDANCE QUESTION WAS:
Find egf of an=n for 0<n<5 an=0 if n>=6

A2. MY ANSWER TO THE  SECOND ATTENDANCE QUESTION IS:
x+x^2+x^3/2+x^4/6+x^5/24 


Q3. THE  THIRD ATTENDANCE QUESTION WAS:
what is egf of an=0 for n to 5 and an=1 for n>=6

A3. MY ANSWER TO THE  THIRD ATTENDANCE QUESTION IS:
exp(x)-(1/120)*x^5-(1/24)*x^4-(1/6)*x^3-(1/2)*x^2-x-1


Q4. THE  FOURTH ATTENDANCE QUESTION WAS:
find egf of an=n-2!

A4. MY ANSWER TO THE  FOURTH ATTENDANCE QUESTION IS:
-x*ln(-x+1)+ln(-x+1)+x


Q5. THE  FIFTH ATTENDANCE QUESTION WAS:
i what is the a number
ii how many digits does the graphs have

A5. MY ANSWER TO THE  FIFTH ATTENDANCE QUESTION IS:
i A001187
ii 3365

Q6. THE  SIXTH ATTENDANCE QUESTION WAS
Find the weight enumerator

A6. MY ANSWER TO THE  SIXTH ATTENDANCE QUESTION IS
1/(1-x^3-x^4-x^7)


Q7. THE  SEVENTH ATTENDANCE QUESTION WAS
Is it a member of x7
how big is x100

A7. MY ANSWER TO THE  SEVENTH ATTENDANCE QUESTION IS
No
520288193827224460161665693343439067946826765691270139531070491212113377307944087322830833805396364699434666974424650987403343482352896062075174445266247411051


Q8. THE  EIGHTH ATTENDANCE QUESTION WAS
How many triplets of the form [labeled tree, perm, sp] of size 150

A8. MY ANSWER TO THE  EIGHTH ATTENDANCE QUESTION IS