Project Euler #173: Using up to one million tiles how many different "hollow" square laminae can be formed?

Hacker
Rank
Score
824
flag of United States
00.00
824
flag of Greece
00.00
824
flag of India
00.00
824
flag of United States
00.00
824
flag of Republic of Moldova
00.00
824
flag of India
00.00
824
flag of India
00.00

[deleted]

824
flag of null
00.00
824
flag of India
00.00
824
flag of India
00.00
824
flag of India
00.00
824
flag of India
00.00
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