Written by For parameters x, n, m, and a, this function computes the sum of a power series: a1 * x^n + a2 * x^(n+m) + … + ai * x^(n+(i-1)m), where i denotes the count of values within the range ‘a’.
For parameters x, n, m, and a, this function computes the sum of a power series: a1 * x^n + a2 * x^(n+m) + … + ai * x^(n+(i-1)m), where i denotes the count of values within the range ‘a’.