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

Hacker
Rank
Score
261
flag of France
100.00
262
flag of Germany
100.00
263
flag of United States
100.00
265
flag of United States
100.00
266
flag of India
100.00
267
flag of India
100.00
268
flag of Turkey
100.00
269
flag of Sri Lanka
100.00
270
flag of India
100.00
271
flag of India
100.00
272
flag of China
100.00
273
flag of Palestine, State of
100.00
274
flag of Netherlands
100.00
275
flag of India
100.00
276
flag of United States
100.00
277
flag of Italy
100.00
280
flag of Vietnam
100.00
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