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Number of 2-sided strip polykites with n cells.
1

%I #8 Oct 02 2013 16:25:26

%S 1,2,3,7,14,31,63,141,297,649,1391,3026,6539,14187,30619,66172,142667,

%T 307883,663506,1429816,3077752,6622351

%N Number of 2-sided strip polykites with n cells.

%H Ed Pegg, Jr., <a href="http://demonstrations.wolfram.com/PolyformExplorer/">Illustrations of polyforms</a>

%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/Polykite.html">Polykite</a>

%K nonn,hard,more

%O 1,2

%A _Ed Pegg Jr_, May 13 2009

%E a(15)-a(22) from _Joseph Myers_, Nov 28 2010