Project Euler #42: Coded triangle numbers

Hacker
Rank
Score
5421
flag of India
100.00
5422
flag of India
100.00
5423
flag of India
100.00
5424
flag of India
100.00
5425
flag of Sri Lanka
100.00
5426
flag of India
100.00
5428
flag of India
100.00
5430
flag of India
100.00
5431
flag of India
100.00
5432
flag of India
100.00
5436
flag of India
100.00
5438
flag of Brazil
100.00
5439
flag of India
100.00
5440
flag of India
100.00
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