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%I #7 Jan 08 2019 19:09:03
%S 0,1,3,14,70,372,2058,11752,68706,409130,2472646,15127620,93504944,
%T 583032968,3662883960,23163461280,147329432094,941880843108,
%U 6049001532148,39007700026460,252477751201074,1639657957610596,10680997864879592,69772819359471480,456959583009324200
%N Number of closed self-avoiding paths on square lattice with 2*n steps, A010566(n)/8.
%C Rotations and reflections of the path are counted only once, but see A266549 for further elimination of path isomorphisms.
%D See A010566.
%Y Cf. A002931, A010566, A266549.
%K nonn,walk
%O 1,3
%A _Hugo Pfoertner_, Jan 08 2019
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