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%I #9 Feb 01 2019 17:23:23
%S 1,1,2,3,14,31,230,675,6902,25231,329462,1441923,22934774,116914351,
%T 2193664790,12764590275,276054834902,1805409270031,44222780245622,
%U 321113303226243,8787513806478134,70146437009397871,2121181056663291350,18462286083671614275
%N Number of permutations of [n] within distance floor(n/2) of a fixed permutation.
%H Alois P. Heinz, <a href="/A306267/b306267.txt">Table of n, a(n) for n = 0..475</a>
%F a(n) = A306209(n,floor(n/2)).
%Y Cf. A306209.
%Y Shifted bisections give: A048163 (even part), A092552 (odd part).
%K nonn
%O 0,3
%A _Alois P. Heinz_, Feb 01 2019
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