🌐EnglishEnglishDeutschEspañolFrançaisItalianoPortuguêsSvenskaРусскийالعربية한국어中文日本語EntityQ190900· pop 19· linked from 239 articlescentered square numbersubclass of centered polygonal numberWikidata factsImageCentered-square-numbers-1-to-4.pngSources (1)wikidata.orgvia Wikidata · CC0Available in 18 languagesFrançaisDeutsch中文日本語РусскийItalianoالعربيةemlEsperantoFinnishConnectionsprime numberEntityfigurate numberEntityCategoriesFigurate numbersQuadrilaterals