中心つき五角数
1. Centered pentagonal numberA centered pentagonal number is a centered figurate number that represents a pentagon with a dot in the center and all other dots surrounding the center in successive pentagonal layers. The centered pentagonal number for n is given by the formula The first few centered pentagonal numbers are 1, 6, 16, 31, 51, 76, 106, 141, 181, 226, 276, 331, 391, 456, 526, 601, 681, 766, 856, 951, 1051, 1156, 1266, 1381, 1501, 1626, 1756, 1891, 2031, 2176, 2326, 2481, 2641, 2806, 2976.
Read “Centered pentagonal number” on English Wikipedia
Read “中心つき五角数” on Japanese Wikipedia
Read “Centered pentagonal number” on DBpedia
Read “Centered pentagonal number” on English Wikipedia
Read “中心つき五角数” on Japanese Wikipedia
Read “Centered pentagonal number” on DBpedia
Discussions
Log in to talk about this word.