Series
Sum of series
∑(i=1..n) c = c·n
∑(i=1..n) i = n(n+1) / 2
∑(i=1..n) i² = n(n+1)(2n+1) / 6
∑(i=1..n) i³ = n²(n+1)² / 4
∑(i=1..n) 1/i = 1
∑(i=1..n) c = c·n
∑(i=1..n) i = n(n+1) / 2
∑(i=1..n) i² = n(n+1)(2n+1) / 6
∑(i=1..n) i³ = n²(n+1)² / 4
∑(i=1..n) 1/i = 1