# Ulam number

> member of an integer sequence in which each number is the sum of a unique pair of earlier numbers

**Wikidata**: [Q1784026](https://www.wikidata.org/wiki/Q1784026)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Ulam_number)  
**Source**: https://4ort.xyz/entity/ulam-number


## References

1. Freebase Data Dumps. 2013