[farhanhubble]

Amazing article! There's a bug in it though. The LHS of the sum of cubes formula ends in n^2 instead of n^3.

[lokedhs]

There is an error in the squares formula as well. The correct formula is:

    (n*(n+1)*(2*n+1))/6.

[weebst]

Thanks a lot for pointing these out! I've corrected them.