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1. Homework Statement

1. Homework Statement

The example is of an Einstein solid, with N=3 oscillators. The book lists the multiplicity of each macrostate, with presumably each macrostate as the total energy units of the system. It says "There is just one microstate with total energy 0, while there are 3 microstates with one unit of energy, six with two units, and ten with three units."

Giving 20 total microstates, then it lists them all in a table.

## Homework Equations

Finally it gives the formula:

$${\Omega}(N, q)= {{q+N-1}\choose{q}}=\frac{(q+N-1)!}{q!(N-1)!}$$ Where N is the number of oscillators and q is the energy units.

## The Attempt at a Solution

My problem is, the book doesn't explicitly say what q is for this example, but I'm assuming it is 4? So using N=3 and q=4 for that equation gives me 15 microstates, using q=3 gives 10 microstates, q = 5 gives 21.

So I'm not sure what I'm missing. I'm going to step away from the problem for a minute and hopefully I can find my mistake, but in the meantime I'm posting it here. Thanks in advance.