pythonize this!

[Jussi Piitulainen]

Lie Ryan writes:

> On 06/15/10 21:49, superpollo wrote:
> > goal (from e.c.m.): evaluate
> > 1^2+2^2+3^2-4^2-5^2+6^2+7^2+8^2-9^2-10^2+...-2010^2, where each
> > three consecutive + must be followed by two - (^ meaning ** in
> > this context)
[...]
> Probably bending the rules a little bit:
> 
> >>> sum(x**2 - 8*x - 20 for x in range(1, 2010, 5))
> 536926141
> 
> another variation:
> 
> >>> sum((x - 10) * (x + 2) for x in range(1, 2010, 5))
> 536926141

Gleefully bending the rules all the way:

>>> 536926141
536926141

Cheers!