Touchard's Drunkard
arXiv:1612.04076
Abstract
Based on Touchard's identity, a simple derivation is given for the enumeration of the N/S/E/W walks that remain on the north side of the origin.
arXiv:1612.04076
Based on Touchard's identity, a simple derivation is given for the enumeration of the N/S/E/W walks that remain on the north side of the origin.