Difference between revisions of "User talk:Baijiangchen"
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==Sam's stuff== | ==Sam's stuff== | ||
Let <math>W(n)=\sum_{i=1}^{n}(\binom{i-1}{n-1}W(i-1)(x-i)!(2^{x-i}))</math> | Let <math>W(n)=\sum_{i=1}^{n}(\binom{i-1}{n-1}W(i-1)(x-i)!(2^{x-i}))</math> | ||
+ | |||
+ | Assume that for some integer <math>x</math>, <math>W(x)=(2x-1)!!</math>. We intend to show that <math>W(x+1)=(2(x+1)-1)!!=(2x+1)!!</math>. |
Revision as of 00:27, 22 July 2012
If:
Then:
Sam's stuff
Let
Assume that for some integer ,
. We intend to show that
.