%I
%S 0,8,66,728,6388,55736,464832,3809816,30666700,243825424,1918644782,
%T 14973489000,116048634636,894170460880,6855266846678,52329098898360,
%U 397934595732692,3015942269911904,22789668539106112
%N Series expansion for radius of gyration of osculating polygons on square lattice.
%H I. Jensen, <a href="/A121766/b121766.txt">Table of n, a(n) for n = 1..41</a> (from link below)
%H I. Jensen, <a href="http://www.ms.unimelb.edu.au/~iwan/polygons/series/square.perim.osculating.rgs.ser">More terms</a>
%K nonn
%O 1,2
%A _N. J. A. Sloane_, Aug 29 2006
