%I A057784
%S A057784 1,2,2,4,4,10,13,29,47,100,181,383,738,1539,3087,6419,13135,27402,
%T A057784 56779,118876
%N A057784 Number of polypons with n cells.
%C A057784 It would be nice to have a definition of "polypon"! - N. J. A. Sloane 
               (njas(AT)research.att.com), May 09 2007
%D A057784 Computed by Brendan Owen.
%H A057784 Ed Pegg, Jr., <a href="http://demonstrations.wolfram.com/PolyformExplorer/
               ">Illustrations of polyforms</a>
%H A057784 Andrew Clarke, <a href="http://geocities.com/alclarke0/PolyPages/PolyX/
               PolyX.htm">Other Polyforms</a>
%H A057784 Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/
               Polypon.html">Polypon</a> [From Eric W. Weisstein (eric(AT)weisstein.com), 
               Apr 24 2009]
%Y A057784 Cf. A057785.
%Y A057784 Sequence in context: A114338 A133406 A005293 this_sequence A081164 A125553 
               A138317
%Y A057784 Adjacent sequences: A057781 A057782 A057783 this_sequence A057785 A057786 
               A057787
%K A057784 nonn,nice
%O A057784 1,2
%A A057784 N. J. A. Sloane (njas(AT)research.att.com), Nov 04 2000