|
%I #11 Jul 19 2014 09:28:58
%S 1,2,6,19,63,216,756,2685,9650,35018,128084,471623,1746492,6499356,
%T 24290272,91123171,342984175,1294829776,4901319978,18597856445,
%U 70723784744,269486503694,1028736811230,3933715966653
%N Number of self-avoiding polygons of area n with any number of (self-avoiding polygon) holes on square lattice (not allowing rotations).
%H I. Jensen, <a href="/A057409/b057409.txt">Table of n, a(n) for n = 1..40</a> (from link below)
%H I. Jensen, <a href="http://www.ms.unimelb.edu.au/~iwan/polygons/series/square.area.allholes.ser">More terms</a>
%K nonn
%O 1,2
%A _N. J. A. Sloane_, Aug 30 2000
|
