Triangular number
id:
triangular-number-184-319196
title:
Triangular number
text:
A triangular number or triangle number counts objects arranged in an equilateral triangle. Triangular numbers are a type of figurate number, other examples being square numbers and cube numbers. The nth triangular number is the number of dots in the triangular arrangement with n dots on each side, and is equal to the sum of the n natural numbers from 1 to n. The sequence of triangular numbers, starting with the 0th triangular number, is (sequence A000217 in the OEIS)
brand slug:
wiki
category slug:
encyclopedia
description:
Figurate number
original url:
https://en.wikipedia.org/wiki/Triangular_number
date created:
2003-04-21T12:35:57Z
date modified:
2024-09-07T05:22:06Z
main entity:
{"identifier":"Q245102","url":"https://www.wikidata.org/entity/Q245102"}
image:
{"content_url":"https://upload.wikimedia.org/wikipedia/commons/1/1c/First_six_triangular_numbers.svg","width":374,"height":314}
fields total:
13
integrity:
16