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A057406 Number of self-avoiding polygons of area n with one (self-avoiding polygon) hole on square lattice (not allowing rotations). 3

%I

%S 1,12,88,524,2786,13788,64998,296032,1314648,5728172,24595512,

%T 104399172,439084884,1833027048,7605691356,31398503248,129072844079,

%U 528688519536,2158900271080,8792641674684,35728408159781

%N Number of self-avoiding polygons of area n with one (self-avoiding polygon) hole on square lattice (not allowing rotations).

%H I. Jensen, <a href="/A057406/b057406.txt">Table of n, a(n) for n = 8..41</a> (from link below)

%H I. Jensen, <a href="http://www.ms.unimelb.edu.au/~iwan/polygons/series/square.area.1hole.ser">More terms</a>

%K nonn

%O 8,2

%A _N. J. A. Sloane_, Aug 30 2000

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Last modified May 15 18:26 EDT 2021. Contains 343920 sequences. (Running on oeis4.)