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Project Euler:Problem 61 Cyclical figurate numbers
Triangle, square, pentagonal, hexagonal, heptagonal, and octagonal numbers are all figurate (polygonal) numbers and are generated by the following formulae: Triangle   P3,n=n(n+1)/2   1, 3,...
分类:其他好文   时间:2015-07-14 18:23:07    阅读次数:83
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