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%I #5 Aug 04 2015 13:58:25
%S 0,0,2,16,160,1440,15120
%N a(n) = Sum_k k*A259707(n,k).
%D A. Sade, Sur les Chevauchements des Permutations, published by the author, Marseille, 1949. See Section 42.
%H Albert Sade, <a href="/A000108/a000108_17.pdf">Sur les Chevauchements des Permutations</a>, published by the author, Marseille, 1949. [Annotated scanned copy]
%Y Cf. A259707.
%K nonn,more
%O 2,3
%A _N. J. A. Sloane_, Jul 05 2015
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