Hello

Given this:

an = a(n-1) - 1/4A(n-2)

Where n is an element of N (any whole number, 0,1,2,3...)

a1 = a2 = 1

Create a table with A1, A2, A3, A4, A5 and their answers.

Then prove that the explicit formula is:

An = n(1/2)^n-1

My shot at it:

The thing that I am stumped on:

a1 = a2 = 1

Does this mean that for all N's the answer is 1?

a3 = a(n-1) - 1/4A(n-2)

a3 = a2 - 1/4*a1, a3 = 1 - 1/4*1 = 0.25???