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七角锥数

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七角锥数是前幾個七邊形數的和,第n個七角锥数可以由第1至n個七邊形數的和計算,或是使用公式來計算。

前幾個七角锥数是: 1, 8, 26, 60, 115, 196, 308, 456, 645, 880, 1166, 1508, 1911, 2380, 2920, 3536, 4233, 5016, 5890, 6860, 7931, 9108 (OEIS數列A002413

参考来源

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OELS:A002413

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七角锥数
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