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Problem 28 https://projecteuler.net/problem=28 Starting with the number 1 and moving to the right in a clockwise direction a 5 by 5 spiral is formed a 阅读全文
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Problem 30 https://projecteuler.net/problem=30 Surprisingly there are only three numbers that can be written as the sum of fourth powers of their digi 阅读全文
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Problem 29 Consider all integer combinations of ab for 2 ≤ a ≤ 5 and 2 ≤ b ≤ 5: 仔细看看以下a与b的组合 If they are then placed in numerical order, with any repe 阅读全文