double_factorial
Calculate the double factorial of an integer using the formula n!! = n × (n-2) × (n-4) × ... × 2 or 1. This mathematical function computes products of integers decreasing by two for arithmetic operations.
Instructions
Calculate the double factorial of a number. n!! = n × (n-2) × (n-4) × ... × 2 or 1. (Domain: arithmetic, Category: general)
Input Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| n | Yes |