Problem 45364. Sum of series

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

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

Solution Comments

Problem Recent Solvers1225

Suggested Problems

• Remove any row in which a NaN appears

  8749 Solvers

• Is this triangle right-angled?

  6309 Solvers

• Back to basics - mean of corner elements of a matrix

  454 Solvers

• Area of a triangle

  965 Solvers

• Voltage in a lamp

  366 Solvers

More from this Author174

• Seconds

  14 Solvers

• Count the days

  65 Solvers

• Jump Search - 01

  8 Solvers

• Sky full of stars - 03

  28 Solvers

• Coin Distribution - 02

  29 Solvers