%I #10 Dec 04 2023 16:43:51
%S 3,30,554,12453,308313,8055534
%N Number of fixed n-polyominoids, allowing corner-connections only.
%H <a href="/index/Pol#polyominoes">Index entries for sequences related to polyominoes</a>.
%Y Cf. A075678 (polyominoids, edge-connections only), A365651 (corner- and edge-connections), A365652 (free).
%Y 27th row of A366767.
%K nonn,hard,more
%O 1,1
%A _Pontus von Brömssen_, Sep 17 2023