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A solution to the 28th Project Euler problem
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| ans=1 | |
| n=1001 | |
| y=range(3,n+1,2) | |
| #The solution comes from the observation that the sum of 4 nxn corner squares is the following poly (for odd n>1) | |
| def poly(x): | |
| ans=4*x**2-6*x+6 | |
| return ans | |
| for o in y: | |
| ans+=poly(o) | |
| print ans |
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