MathDB
2014 Advanced #3

Source:

July 1, 2022
2014Advanced Topics Test

Problem Statement

A mouse is playing a game of mouse hopscotch. In mouse hopscotch there is a straight line of 1111 squares, and starting on the first square the mouse must reach the last square by jumping forward 11, 22, or 33 squares at a time (so in particular the mouse’s first jump can be to the second, third, or fourth square). The mouse cannot jump past the last square. Compute the number of ways there are to complete mouse hopscotch.