NordstromRobinsonCode()
NordstromRobinsonCode returns a Nordstrom-Robinson code, the best code
with word length n=16 and minimum distance d=6 over GF(2). This is
a non-linear (16, 256, 6) code.
gap> C := NordstromRobinsonCode();
a (16,256,6)4 Nordstrom-Robinson code over GF(2)
gap> OptimalityCode( C );
0
GAP 3.4.4