A103464 - OEIS

%I #17 Dec 10 2023 14:46:01

%S 1,1,2,7,25,118,558,2876,14982,80075,431889,2354991,12930257,71459124,

%T 396978189,2215609864

%N Number of polyominoes consisting of n regular unit heptagons.

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

%Y Cf. A000577, A000104, A000228, A103466, A103467, A103468, A103469, A103470, A103471, A103472, A103473, A120102, A120103, A120104.

%K nonn,more

%O 3,3

%A _Sascha Kurz_, Jun 09 2006