Code details

best found code with parameters
q=16 k=3 n=28
minimum distance = 25

this is new optimal code


the previous bounds were -1/25
this is a projective code


We used the prescribed group of automorphisms with the following generators


10 0 10
0 0 10
10 10 0

This group makes 39 orbits of sizes:

7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7


The solution of the corresponding linear system of equations was found after less than 500 seconds:

0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 2 1 3 2 1 3 0 3 0 0 3 3 1 0 2 1 0 3 2 2 3 2 3 3 1 3 3 3 0 0 1 3 3 1 3 3 1 0 0


This produces the following generator matrix

0 15 15 15 15 15 15 0 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15
15 0 5 5 5 10 15 15 0 1 14 3 11 15 14 7 7 7 10 3 12 14 4 2 2 2 10 11
5 10 0 5 10 15 10 11 12 0 15 3 14 4 9 9 3 11 9 5 14 5 8 8 3 12 1 8



Which is a code with the following weight distribution
1y28+1680x25y3+630x26y2+840x27y1+945x28