英语词汇“pentagonal number”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	pentagonal number
释义	pentagonal number pentagonal number [pen′tag·ən·əl ¦nəm·bər] (mathematics) The total number, P (n), of dots marking off unit segments of the sides of a set of n- 1 nested pentagons, given by the formula P (n) = n (3 n- 1)/2.
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