# Leibniz harmonic triangle

> triangular arrangement L(r,c) of unit fractions, where (r,c) are row and column numbers, such that L(r, 1) = 1/r and L(r, c) = L(r − 1, c − 1) − L(r, c − 1)

**Wikidata**: [Q649470](https://www.wikidata.org/wiki/Q649470)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Leibniz_harmonic_triangle)  
**Source**: https://4ort.xyz/entity/leibniz-harmonic-triangle


## References

1. Freebase Data Dumps. 2013