9-1 = 8 × 1,25-9 = 8 × 2,49-25 = 8 × 3,81-49 = 8 × 4 ·· these equations reflect the law of natural numbers. Let n denote the equation of natural numbers with n

9-1 = 8 × 1,25-9 = 8 × 2,49-25 = 8 × 3,81-49 = 8 × 4 ·· these equations reflect the law of natural numbers. Let n denote the equation of natural numbers with n

(2n+1)²-(2n-1)²=8n