See you later, then...

]]>A really cool answer don't you think!

I will see you later, chores to do and thanks for working on the problem. You did great work with the formula.

]]>Yes, it looks like it should be n^2/60.

]]>But now I am getting

That one works!!!!! Shortest one yet!

But if you use knowledge of landau notation you can see how we could derived it from my answer!

]]>Where do you get the x from?

]]>But something is wrong. If you are right you should have got a better answer than you did. I do not understand what is going wrong. I am rechecking everything please hold.

When I make your substitutions I get

]]>You didn't substitute the rest of the parameters. α=0, β=3, A(x)=0, r=1.

]]>See what you put into B(x) it does not equal the original generating function. What is in the denominator of your B(x) does not get to the the denominator of the asymptotic form.

]]>I do not think you can do that with B(x).

]]>Now we have α=1, β=3, A(x)=0, r=1,

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