Classification of Hadamard matrices of order 24 and 28
Let \(H(n)\) denote the number of equivalence classes of Hadamard matrices of order \(4n\). Kimura established that \(H(6)= 60\) and \(H(7)= 487\), see \textit{H. Kimura} [Graphs Comb. 5, No. 3, 235-242 (1989; Zbl 0694.05019)] and \textit{H. Kimura} [Discrete Math. 133, No. 1-3, 171-180 (1994; Zbl 0809.05020)]. The author verifies these facts using his own algorithm.
scientific article; zbMATH DE number 769314