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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Schröder number ： ウィキペディア英語版 Schröder number In mathematics, a Schröder number describes the number of paths from the southwest corner (0, 0) of an ''n'' × ''n'' grid to the northeast corner (''n'', ''n''), using only single steps north, northeast, or east, that do not rise above the SW–NE diagonal. The first few Schröder numbers are :1, 2, 6, 22, 90, 394, 1806, 8558, .... . They were named after the German mathematician Ernst Schröder. ==Examples== The following figure shows the 6 Schröder paths through a 2 × 2 grid: 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Schröder number」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.