tetrahedral number
A neighbourhood in the city of Derry, County Londonderry, Northern Ireland. / A hamlet in Aberdeenshire council area, Scotland (OS grid ref NJ8135)
Alternative spelling of bousing ken
A surname.
(mathematics) A number which results from the summation of consecutive triangular numbers, starting from 1. If the triangular numbers in such a summation are depicted as horizontal triangular arrays of units then these arrays can be stacked vertically to yield a tetrahedral array.
アカウントを持っていませんか？ 新規登録
アカウントを持っていますか？ ログイン
DiQt（ディクト）
無料
★★★★★★★★★★
