OSOGO, N. A.; SIMATWO, K. B. On Extension of Existing Results on the Diophantine Equation: \(\sum_{r=1}^n w_r^2+\frac{n}{3} d^2=3\left(\frac{n d^2}{3}+\sum_{r=1}^{\frac{n}{3}} w_{3 r-1}^2\right)\). Earthline Journal of Mathematical Sciences, v. 15, n. 2, p. 201-209, 5 Jan. 2025.