Project Euler #44: Pentagon numbers

Hacker
Rank
Score
4101
flag of India
66.67
4102
flag of India
66.67
4103
flag of Sri Lanka
66.67
4104
flag of India
66.67
4105
flag of India
66.67
4106
flag of India
66.67
4110
flag of United States
66.67
4111
flag of United States
66.67
4112
flag of Viet Nam
66.67
4113
flag of United States
66.67
4115
flag of India
66.67
4120
flag of India
66.67
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