Tetrahedral Triangular Pyramidal Number Calculator

Calculate the total number of balls in a pyramid using the Tetrahedral Triangular Pyramidal Number Calculator.

Non-Negative Number (n) =
Tetrahedral Number (Tn) =

This Calculator is a powerful tool for finding numbers that belong to both the tetrahedral and triangular pyramidal number sequences. These numbers are fascinating mathematical constructs with applications in various areas, including combinatorics and discrete mathematics.

Understanding Tetrahedral and Triangular Pyramidal Numbers

Before using the calculator, it’s essential to understand the two types of numbers it deals with:

Tetrahedral Numbers

A tetrahedral number represents a three-dimensional triangular arrangement of spheres or objects. The nth tetrahedral number can be calculated using the formula:

T(n) = (n * (n + 1) * (n + 2)) / 6

Triangular Pyramidal Numbers

Triangular pyramidal numbers are formed by stacking equilateral triangles to create a three-dimensional pyramid. The nth triangular pyramidal number is given by:

TP(n) = (n * (n + 1) * (n + 2)) / 6

Using the Calculator

Here’s how you can use the Tetrahedral Triangular Pyramidal Number Calculator:

  1. Input: Enter the value of ‘n’ for which you want to find the corresponding number.
  2. Calculate: Click the “Calculate” button.
  3. Result: The calculator will display the result corresponding to input value ‘n’.


Tetrahedral and triangular pyramidal numbers appear in a variety of mathematical puzzles, recreational math, and problems related to arrangements and combinations. They also have applications in:

  • Combinatorics: Counting and analyzing combinations and permutations of objects.
  • Discrete Mathematics: Studying mathematical structures with distinct, separate values.
  • Puzzles and Games: Solving puzzles and creating mathematical games.
  • Math Education: Teaching and learning about unique number sequences.

By using the Tetrahedral Triangular Pyramidal Number Calculator, you can quickly find these fascinating numbers and explore their properties and applications in mathematics and beyond.