Supungamos que el vértice delsegundo cuadrado esté a una distancia del vértice del primero<img src="https://tex.z-dn.net/?f=az" /> (en el lado izquierdo), donde<img src="https://tex.z-dn.net/?f=z%5Cin%20%280%2C1%29" /> entonces el lado del segundo es : <img src="https://tex.z-dn.net/?f=a_2%3D%5Csqrt%7Ba%5E2z%5E2%2B%28a-az%29%5E2%7D%3Da%5Csqrt%7B2z%5E2-2z%2B1%7D" /> <img src="https://tex.z-dn.net/?f=a_2%3Da%5Csqrt%7B2%5Cleft%28z-%5Cdfrac%7B1%7D%7B2%7D%5Cright%29%5E2%2B%5Cdfrac%7B1%7D%7B2%7D%7D" />
El tercer cuadrado
<img src="https://tex.z-dn.net/?f=a_3%3Da_2%5Csqrt%7B2%5Cleft%28z-%5Cdfrac%7B1%7D%7B2%7D%5Cright%29%5E2%2B%5Cdfrac%7B1%7D%7B2%7D%7D%5C%5C%20%5C%5C%0A%0A%5Cboxed%7Ba_3%3Da%5Csqrt%7B2%5Cleft%28z-%5Cdfrac%7B1%7D%7B2%7D%5Cright%29%5E2%2B%5Cdfrac%7B1%7D%7B2%7D%7D%5E2%7D" />
el n - ésimo cuadrado :
<img src="https://tex.z-dn.net/?f=a_n%3Da%5Csqrt%7B2%5Cleft%28z-%5Cdfrac%7B1%7D%7B2%7D%5Cright%29%5E2%2B%5Cdfrac%7B1%7D%7B2%7D%7D%5E%7B%5C%2Cn-1%7D" /> = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =
<img src="https://tex.z-dn.net/?f=A_n%3Da_n%5E2%5C%5C%0Ap_n%3D4a_n%5C%5C%20%5C%5C%0A" /> = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =
<img src="https://tex.z-dn.net/?f=%5Cdisplaystyle%0AS%3D%5Csum%5Climits_%7Bn%3D1%7D%5E%7B%2B%5Cinfty%7Dp_n%3D4a%5Csum%5Climits_%7Bn%3D1%7D%5E%7B%2B%5Cinfty%7D%5Csqrt%7B2%5Cleft%28z-%5Cdfrac%7B1%7D%7B2%7D%5Cright%29%5E2%2B%5Cdfrac%7B1%7D%7B2%7D%7D%5E%7B%5C%2Cn-1%7D%5C%5C%20%5C%5C%20%5C%5C%0A%5Cboxed%7BS%3D%5Cdfrac%7B4a%7D%7B1-%5Csqrt%7B2%5Cleft%28z-%5Cdfrac%7B1%7D%7B2%7D%5Cright%29%5E2%2B%5Cdfrac%7B1%7D%7B2%7D%7D%7D%7D" />.