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

Hacker
Rank
Score
661
flag of United States
22.22
662
flag of India
22.22
663
flag of Turkey
22.22
664
flag of United Kingdom
22.22
665
flag of United States
22.22
668
flag of India
22.22
669
flag of India
22.22

[deleted]

670
flag of null
22.22
671
flag of India
22.22
672
flag of India
22.22
673
flag of United States
22.22
675
flag of United States
22.22
676
flag of India
22.22
678
flag of United States
22.22
679
flag of United States
22.22
680
flag of Indonesia
22.22
Items per page:
Select...