Delannoy number
plural of mantel
Alternative form of snow cream
(mathematics) The number of possible paths from the southwest corner (0, 0) of a rectangular grid to the northeast corner (m, n), using only single steps north, northeast, or east.
Synonym of pentastarch
格子上で (0,0) から (m,n) まで、北・北東・東の単位ステップのみを使う異なる格子経路の数を数えるには、格子の南西隅 (0,0) から北東隅 (m,n) へ北・北東・東の単位ステップだけで到達する可能な経路の数を計算します。
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