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%I #6 May 07 2013 18:14:03
%S 1,2,5,13,41,151,672,3047,13796,70702,406241,2306597,13050503,
%T 81009240,546463298,3646507024,24169492053,172363021094,1313445510576,
%U 9904229155933,74120163086669
%N Number of permutations of 1..n with sum (i-p(i))^2 <= (n+1)*n/2.
%Y Cf. A179266.
%K nonn
%O 1,2
%A _R. H. Hardin_, Jul 06 2010
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