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目前发表了 173 篇文章

Problem 63 Powerful digit counts

Problem 62 Cubic permutations

Problem 61 Cyclical figurate numbers

Problem 60 Prime pair sets

Problem 59 XOR decryption

Problem 58 Spiral primes

Problem 57: Square root convergents

Problem 56 Powerful digit sum

Problem 55 Lychrel numbers

Problem 54 Poker hands

Problem 53 Combinatoric selections

Problem 52 Permuted multiples

Problem 51 Prime digit replacements

Problem 50 Consecutive prime sum

Problem 44 Pentagon numbers