1. Convert Online⇨
2. Mathematics⇨
3. Arithmetic⇨
4. Sum of first n natural numbers

1 + 2 + 3 + ... + n

{
  "topic": "sum-of-n-natural-numbers",
  "input_types": [
    "int"
  ],
  "input_labels": [
    "n"
  ],
  "input_values": [
    "8"
  ],
  "type": "Calculate",
  "title": "Sum of first n natural numbers",
  "category": "Arithmetic",
  "formula_mathjax": "\\(\\dfrac{ n ( n +1)}{2} \\)",
  "formula": " n * ( n + 1) / 2",
  "formula_captions": "<span>n</span> is an integer value.",
  "op_label": "Sum",
  "explanation": "The sum of first n natural numbers is<pre>1 + 2 + 3 + ... + n</pre>"
}