python The number of possible binary tree topologies (given all possible heights) with n nodes is the Catalan Number (in closed form) Cn = 1/(n+1)*(2n choose n). Recursively, this can also be written as: question ) Write a function cn_fast(n) that computes the n-th catalan number using the closed form formulation, and Conduct doubling experiments (just n = 1, 2, 4, and 8) to compute runtimes. Plot the result on a log-log plot.

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The number of possible binary tree topologies (given all possible heights) with n nodes is the Catalan Number (in closed form) Cn = 1/(n+1)*(2n choose n). Recursively, this can also be written as:

question ) Write a function cn_fast(n) that computes the n-th catalan number using the closed form formulation, and Conduct doubling experiments (just n = 1, 2, 4, and 8) to compute runtimes. Plot the result on a log-log plot. 

п-1
C, = 2 kn-1-k
with co
1 and n >= 1.
C, C
%D
k=0
Transcribed Image Text:п-1 C, = 2 kn-1-k with co 1 and n >= 1. C, C %D k=0
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