describe each sequence recursively. Include initial conditions and assume that the sequences begin with a₁.
-a_n = the number of ways to go down an n-step staircase if you go down 1, 2, or 3 steps at a time

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The Answer of describe each sequence recursively. Include initial conditions and assume that the sequences begin with a 1 . -a_n = the number of ways to go down an n-step staircase if you go down 1, 2, or 3 steps at a time

Describe Each Sequence Recursively