Fòmil pou nonm konpoze: Diferans ant vèsyon yo

<math>\varphi\left(n\right)={\left(\left[\frac{\left[\frac{\left(n!\right)^2}{n^3}\right]}{\frac{\left(n!\right)^2}{n^3}}\right]-\left[\frac{1}{n}\right]\right)} </math>

 

 

<math>\mathbb{X}_n=\sum_{i=1}^{4m}{\left(\left[\frac{1+\sum_{m=1}^{i}{\varphi\left(m\right)}}{n+1}\right]\times\left[\frac{n+1}{1+\sum_{m=1}^{i}{\varphi\left(m\right) }}\right]\times i\times\varphi\left(i\right)\right)}</math>