How many binary trees are possible using n number of identical nodes?

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- January 1st 2012, 10:37 PMnikhilbhrGraph theory
How many binary trees are possible using n number of identical nodes?

- January 2nd 2012, 01:16 AMAlso sprach ZarathustraRe: Graph theory
- January 2nd 2012, 01:55 AMnikhilbhrRe: Graph theory
I have gone through that website but can u tell me how that formula applicable here ... I am not getting it

Thx for help