Definition:Stern Number/Historical Note

Historical Note on Stern Number
On reading about Goldbach's Lesser Conjecture in $1856$, and his students tested all the primes to $9000$, and found the counterexamples $5777$ and $5993$.

He then went on to investigate odd integers that cannot be represented in the form $2 a^2 + p$ where $a > 0$.

The odd integers that he and his students found were named Stern numbers by in his $1993$ paper which summarised the findings on this topic.