0,17

J. Hadamard, R\'{e}solution d'une question relative aux d\'{e}terminants, Bull. des Sciences Math. 2 (1893), 240-246.

Kimura, H., (1986), Hadamard matrices of order 28 with automorphism groups of order two, J. Combin. Theory, A 43, 98-102.

Kimura, H., (1989), New Hadamard matrix of order 24, Graphs Combin., 5, 235-242.

Kimura, H., (1994), Classification of Hadamard matrices of order 28 with Hall sets, Discrete Math., 128, 257-268.

Kimura, H., (1994), Classification of Hadamard matrices of order 28, Discrete Math., 133, 171-180.

Spence, Edward; Classification of Hadamard matrices of order 24 and 28. Discrete Math. 140 (1995), no. 1-3, 185-243.

A007299 is the main entry for this sequence. Cf. A003432.

Sequence in context: A101194 A106222 A090750 this_sequence A087935 A089877 A079074

Adjacent sequences: A036294 A036295 A036296 this_sequence A036298 A036299 A036300

hard,nonn,nice

N. J. A. Sloane (njas(AT)research.att.com).