Problem 46551. Solve a ballot counting problem

Candidate X and Candidate O receive the same number (n) of votes in an election. Write a function to determine the number of ways the ballots can be counted such that X is never behind O. For example, for n = 3 there are five ways:
XXXOOO
XXOXOO
XXOOXO
XOXXOO
XOXOXO
Optional: Identify the connection between this problem and Cody Problem 42821.
Solve

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60.87% Correct | 39.13% Incorrect
Last Solution submitted on Apr 01, 2023

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