Centered nonagonal number
id:
centered-nonagonal-number-183-1767155
title:
Centered nonagonal number
text:
A centered nonagonal number (or centered enneagonal number) is a centered figurate number that represents a nonagon with a dot in the center and all other dots surrounding the center dot in successive nonagonal layers. The centered nonagonal number for n layers is given by the formula
- N c ( n ) = ( 3 n − 2 ) ( 3 n − 1 ) 2. Multiplying the (n - 1)th triangular number by 9 and then adding 1 yields the nth centered nonagonal number, but centered nonagonal numbers have an even simpler relation t
brand slug:
wiki
category slug:
encyclopedia
description:
Centered figurate number that represents a nonagon with a dot in the center
original url:
https://en.wikipedia.org/wiki/Centered_nonagonal_number
date created:
2004-11-27T20:25:23Z
date modified:
2024-09-07T05:26:04Z
main entity:
{"identifier":"Q1587799","url":"https://www.wikidata.org/entity/Q1587799"}
image:
{"content_url":"https://upload.wikimedia.org/wikipedia/commons/7/70/Centered_nonagonal_number.svg","width":800,"height":800}
fields total:
13
integrity:
16