%I #13 Sep 21 2022 01:45:14

%S 1,1,3,14,82,585,4418,34838,280014,2285047,18838395,156644526,

%T 1311575691

%N Number of polyominoes consisting of n regular unit 9-gons.

%H Matthias Koch and Sascha Kurz, <a href="http://arxiv.org/abs/math/0605144">Enumeration of generalized polyominoes</a>, arXiv:math/0605144 [math.CO], 2006.

%H S. Kurz, <a href="http://www.mathe2.uni-bayreuth.de/sascha/oeis/k-polyominoes.html">k-polyominoes</a>.

%Y Cf. A000577, A000104, A000228, A103465, A103466, A103468, A103469, A103470, A103471, A103472, A103473, A115071, A120102, A120103, A120104.

%K more,nonn

%O 1,3

%A _Sascha Kurz_, Feb 07 2005

%E More terms from _Sascha Kurz_, Jun 09 2006

%E Definition corrected by _John Mason_ and _Sascha Kurz_, Sep 20 2020