Problem 45364. Sum of series

 a(n) = n^2 - (n-1)^2

   a(1)+a(2)+...+a(n)

Solution Comments

Problem Recent Solvers1312

Suggested Problems

• Remove the polynomials that have positive real elements of their roots.

  1743 Solvers

• Project Euler: Problem 2, Sum of even Fibonacci

  2924 Solvers

• チェッカーボードを作ろう

  404 Solvers

• Deleting an element in a matrix

  499 Solvers

• Find the minimum of the column-maximums of a matrix

  692 Solvers

More from this Author174

• First Duplicate

  13 Solvers

• Yoonir - 03

  20 Solvers

• Minimal Path - 01

  17 Solvers

• Spiral Out - 02

  12 Solvers

• Pairs with Given Sum

  12 Solvers