N(54) >= 5

Consider the matrices

A1=
- - - -
0 0 0 0
1 27 16 7
24 40 1 35
10 30 22 44
5 18 14 33
30 16 33 27
A2=
-
0
3
7
7
3
0

Again (as in Theorem 2.54) replace each column of [A1 | -A1 | A2] by its 7 cyclic shifts. This gives a (45,7,1,1) QDM.

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