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%I #3 Mar 31 2012 12:35:45
%S 0,1,3,5,21,87,350,1399,6689,36711,196510,1037354,6147299,40106433,
%T 256572630,1621282565,11156001505,82732094377,603846490132,
%U 4357719350552,33658109397606,276421527541533
%N Number of permutations of 1..n with sum (i-p(i))^2 < n*(n-1)/2
%K nonn
%O 1,3
%A _R. H. Hardin_ Jul 06 2010