tetrahedral number
tetrahedral number · tetrahedral numbers
A number which results from the summation of consecutive triangular numbers, starting…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.
Meaning
1 sensesA 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.
The nᵗʰ tetrahedral number can be calculated with the formula #123;(n#43;1)³-(n#43;1)#92;over 6#125;.
Forms
plural: tetrahedral numbers| Singular | tetrahedral number |
|---|---|
| Plural | tetrahedral numbers |
regular