# Schröder–Hipparchus number

> number in combinatorics

**Wikidata**: [Q15264444](https://www.wikidata.org/wiki/Q15264444)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Schröder–Hipparchus_number)  
**Source**: https://4ort.xyz/entity/schr-der-hipparchus-number