Home›Browse›Kynea number🌐EnglishEnglishDeutschFrançaisPortuguêsSvenska中文日本語EntityQ1122670· pop 8Kynea numberSign in to savenatural number of the form (2^n + 1)^2 - 2Wikidata factsShow 1 more factmaintained by WikiProjectWikiProject Mathematicsvia Wikidata · CC0Available in 8 languagesFrançaisDeutsch中文日本語ArmenianCatalanHungarianSvenskavia Wikidata sitelinks · CC0