Code details

best found code with parameters
q=16 k=3 n=180
minimum distance = 168

this is new optimal code


the previous bounds were -1/168
this is a projective code


We used the prescribed group of automorphisms with the following generators


15 0 0
0 15 0
0 0 15

11 0 0
0 1 0
0 0 11

9 0 9
0 9 0
9 0 0

This group makes 43 orbits of sizes:

3 9 9 9 9 9 9 9 3 9 9 9 9 3 9 9 9 9 9 9 9 3 3 9 9 9 3 9 9 3 9 3 3 9 3 3 3 3 3 1 3 1 1


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

0 1 0 1 1 1 1 1 0 1 1 1 0 0 0 1 1 1 1 1 0 0 0 1 1 0 0 1 1 0 1 0 0 1 0 0 0 0 0 0 0 0 0 12 12 12 12 12 12 12 12 12 8 12 12 12 12 12 12 12 8 12 12 12 12 12 12 8 12 12 12 8 12 8 12 12 12 12 12 12 12 12 0 12 0 0


This produces the following generator matrix

0 0 0 15 15 15 15 15 15 0 0 0 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 0 0 0 15 15 15 15 15 15 0 0 0 15 15 15 15 15 15
15 15 15 1 1 11 11 6 6 15 15 15 5 5 10 10 15 15 8 14 4 5 9 13 10 3 15 14 4 5 7 9 2 10 12 15 1 14 4 5 9 10 11 6 15 1 5 7 2 10 11 6 12 15 8 5 7 2 13 10 3 12 15 1 8 5 13 10 3 11 6 15 1 8 5 13 10 3 11 6 15 1 14 4 5 9 10 11 6 15 14 4 5 7 9 2 10 12 15 8 14 4 5 9 13 10 3 15 1 14 4 7 9 2 11 6 12 1 8 7 2 13 3 11 6 12 8 14 4 7 9 2 13 3 12 1 8 7 2 13 3 11 6 12 1 8 14 4 9 13 3 11 6 1 8 14 4 9 13 3 11 6 15 15 15 8 8 13 13 3 3 15 15 15 14 14 4 4 9 9
14 4 9 0 15 0 15 0 15 5 10 15 0 15 0 15 0 15 4 14 14 12 14 4 12 4 12 2 2 6 7 2 7 6 7 6 1 3 3 11 3 11 1 1 11 11 3 1 1 3 11 11 1 3 8 13 9 9 8 13 8 9 13 6 7 2 7 2 7 6 6 2 8 13 9 13 9 13 8 8 9 12 4 4 14 4 14 12 12 14 9 9 8 13 9 13 8 13 8 3 11 11 1 11 3 1 3 1 2 7 7 6 7 6 2 2 6 3 1 11 11 1 1 3 3 11 14 12 12 4 12 4 14 14 4 4 12 14 14 12 12 4 4 14 13 9 8 8 8 9 9 13 13 7 2 6 6 6 2 2 7 7 7 2 12 0 15 0 15 0 15 1 11 6 0 15 0 15 0 15



Which is a code with the following weight distribution
1y180+3375x168y12+675x172y8+45x180