六角錐數
六角錐數是一個有形數,代表可以裝進六角錐裏的物體數量,第個六角錐數等於前個六邊形數的和。
前幾個六角錐數是1, 7, 22, 50, 95, 161, 252, 372, 525, 715, 946, 1222, 1547, 1925 (OEIS中的数列A002412),第n個六角錐數為。
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