Heptagonal pyramidal number
In mathematics, a heptagonal pyramidal number is a figurate number representing the number of dots in a three-dimensional pattern in the shape of a heptagonal pyramid. The first few heptagonal pyramidal numbers are: 1, 8, 26, 60, 115, 196, 308, 456, 645, 880, 1166, 1508, 1911, ... (sequence in the OEIS) The nth heptagonal number can be calculated by adding up the first n heptagonal numbers, or more directly by using the formula
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Heptagonal pyramidal number
In mathematics, a heptagonal pyramidal number is a figurate number representing the number of dots in a three-dimensional pattern in the shape of a heptagonal pyramid. The first few heptagonal pyramidal numbers are: 1, 8, 26, 60, 115, 196, 308, 456, 645, 880, 1166, 1508, 1911, ... (sequence in the OEIS) The nth heptagonal number can be calculated by adding up the first n heptagonal numbers, or more directly by using the formula
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En arithmétique géométrique, u ...... 15, 196, 308, 456, 645 et 880.
@fr
Heptagonalt pyramidtal är en s ...... , , , , , … (talföljd i OEIS)
@sv
In mathematics, a heptagonal p ...... directly by using the formula
@en
Un numero piramidale ettagonal ...... numeri piramidali ettagonali è
@it
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 ...... 0, 6860, 7931, 9108 （OEIS中的数列）
@zh
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En arithmétique géométrique, u ...... 15, 196, 308, 456, 645 et 880.
@fr
Heptagonalt pyramidtal är en s ...... , , , , , … (talföljd i OEIS)
@sv
In mathematics, a heptagonal p ...... directly by using the formula
@en
Un numero piramidale ettagonal ...... numeri piramidali ettagonali è
@it
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 ...... 0, 6860, 7931, 9108 （OEIS中的数列）
@zh
label
Heptagonal pyramidal number
@en
Heptagonalt pyramidtal
@sv
Nombre pyramidal heptagonal
@fr
Numero piramidale ettagonale
@it
Sepangula piramida nombro
@eo
七角锥数
@zh