Learn Triangular Number
What do you mean by Triangular Number?
Triangular Numbers Definition
A triangular number counts objects arranged in an triangle form.
Triangular Numbers Example
The 1st triangle has just one dot.
The 2nd has another row with 2 extra dots, making 1 + 2 = 3
The 3rd has another row with 3 extra dots, making 1 + 2 + 3 = 6
The 4th has 1 + 2 + 3 + 4 = 10
The 5th has 1 + 2 + 3 + 4 +5 = 15
First 50 Triangular Numbers
0, 1, 3, 6, 10, 15, 21, 28, 36, 45, 55, 66, 78, 91, 105, 120, 136, 153, 171, 190, 210, 231, 253, 276, 300, 325, 351, 378, 406, 435, 465, 496, 528, 561, 595, 630, 666...
Related Number Types
- Integer
- Whole Number
- Digit
- Natural Number
- Odd Number
- Even Number
- Rational Number
- Irrational Number
- Transcendental Number
- Real Number
- Nominal Number
- Ordinal Number
- Arrangement Number
- Abundant Number
- Algebraic Number
- Automorphic Number
- Apocalypsec Number
- Amicable Number
- Aliquot Number
- Almost Perfect Number
- Alphametic Number
- Binary Number
- Catalan Number
- Circular Primes Number
- Complex Number
- Cyclic Number
- Cubic Number
- Congruent Number
- Cardinal Number
- Choice Number
- Composite Number
- Counting Number
- Fibonacci Number
- Fraction