Recursionmedium
0:00.0
A person can climb a staircase by taking 1, 2, or 3 steps at a time. Let be the number of distinct ways to reach step . Which recurrence relation with initial conditions correctly models this?
A person can climb a staircase by taking 1, 2, or 3 steps at a time. Let be the number of distinct ways to reach step . Which recurrence relation with initial conditions correctly models this?