An Extremal Doubly Even Self-Dual Code of Length 112
Masaaki Harada · The Electronic Journal of Combinatorics · 2008
In this note, an extremal doubly even self-dual code of length $112$ is constructed for the first time. This length is the smallest length for which no extremal doubly even self-dual code of length $n ot\equiv 0 \pmod{24}$ has been constructed.