n^n*(one + n)^(- one - n)*Abs(factorial(four + n)/factorial(three + n))
n to the power of n multiply by (1 plus n) to the power of ( minus 1 minus n) multiply by Abs(factorial(4 plus n) divide by factorial(3 plus n))
n to the power of n multiply by (one plus n) to the power of ( minus one minus n) multiply by Abs(factorial(four plus n) divide by factorial(three plus n))