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%I A001111
%S A001111 1,1,1,5,6,1106,208310
%N A001111 Number of inequivalent Hadamard designs of order 4n.
%D A001111 Spence, Edward; Classification of Hadamard matrices of order 24 and 28. 
               Discrete Math. 140 (1995), no. 1-3, 185-243.
%H A001111 Spence, Edward; <a href="http://www.maths.gla.ac.uk/~es/hadamard.html">
               Hadamard matrices</a>
%Y A001111 Sequence in context: A064177 A042721 A048658 this_sequence A116916 A133079 
               A080332
%Y A001111 Adjacent sequences: A001108 A001109 A001110 this_sequence A001112 A001113 
               A001114
%K A001111 nonn,hard,nice,more
%O A001111 1,4
%A A001111 N. J. A. Sloane (njas(AT)research.att.com).

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