login
Number of polykites with n cells.
3

%I #19 Feb 16 2025 08:32:43

%S 1,2,4,10,27,85,262,873,2917,10011,34561,120815,424468,1501441,

%T 5334181,19035075,68167472,244928324,882555803,3188480899,11546307356,

%U 41901879156,152359984459,554991766194,2024964145507

%N Number of polykites with n cells.

%D Computed by Brendan Owen.

%H Andrew Clarke, <a href="http://www.recmath.com/PolyPages/PolyPages/PolyX/PolyX.htm">Other Polyforms</a>

%H Joseph Myers, <a href="https://www.polyomino.org.uk/mathematics/polyform-tiling/">Polyform tiling</a>

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

%H Jaime Rangel-Mondragón, <a href="https://web.archive.org/web/20190411024906/http://www.mathematica-journal.com/issue/v9i3/polyominoes.html">Polyominoes and Related Families</a>, The Mathematica Journal, Volume 9, Issue 3.

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

%K nonn,nice,hard,more,changed

%O 1,2

%A _N. J. A. Sloane_, Nov 04 2000

%E More terms from Brendan Owen (brendan_owen(AT)yahoo.com), Jan 20 2002

%E Link updated by _William Rex Marshall_, Dec 16 2009

%E a(22)-a(25) added by _Craig S. Kaplan_ based on tables by Joseph Myers, Jun 03 2024