%I
%S 1,1,2,6,19,74,353,2080,16023
%N Number of isomorphism classes of racks of order n
%H Sam Nelson, <a href="http://www.esotericka.org/cmc/quandles.html">Quandles and Racks</a>
%Y Cf. A181769
%K nonn,hard,more
%O 0,3
%A _James McCarron_
