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User:Baijiangchen

Revision as of 23:23, 21 July 2012 by Baijiangchen (talk | contribs)
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)

VOCOR·BENIAMINUM

If:

$W(0):=1$

$W(n):=\sum_{i=0}^{n-1}({n-1 \choose i}W(i)(x-i-1)!(2^{x-i-1}))$

Then:

$W(n)=(2n-1)!!$

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