Generate Hadamard matrix of a certain size.
An integer of the form 2^e, 12*2^e, or 20*2^e
n Hadamard matrix with
n>2 exists only if
rem(n,4)=0. This function handles only the cases where
n/20 is a power of 2.
Matrix of size
n of orthogonal columns consisting of
1 and -1 only.
Hadamard matrices have applications in combinatorics, signal processing, and numerical analysis.
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