Mathematics pentagonal number n. any of the series of polygonal numbers (see polygonal, adj. 2) 1, 5, 12, 22, 35, 51, 70, 92, etc., obtained by…
| 单词 | θ114941 |
| 释义 | the world > relative properties > number > mathematical number or quantity > numerical arrangement > [noun] > set > sequence > series > of polygonal numbers (4) pentagonal number1670 Mathematics pentagonal number n. any of the series of polygonal numbers (see polygonal, adj. 2) 1, 5, 12, 22, 35, 51, 70, 92, etc., obtained by… triangular numbers1706 the first series of polygonal numbers (1, 3, 6, 10, 15, 21, etc.; see polygonal, adj. 2), obtained by continued summation of the natural numbers 1… pentagonal1795 Mathematics. A pentagonal number. rare. Subcategories:— sum of (1) |
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