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A354067 Number of tilings of an n X n square using right trominoes, monominoes and 2 X 2 tiles.

%I A354067 #7 May 16 2022 15:08:23
%S A354067 1,1,6,47,3376,475962,355724934,777719132265,6953251175836902,
%T A354067 211458363740571796706,24140111818602303894344572,
%U A354067 9821069154293248979055457847110,14628885986751823763315761493151275720,78680004562091421665338332919348995334919722
%N A354067 Number of tilings of an n X n square using right trominoes, monominoes and 2 X 2 tiles.
%H A354067 Alois P. Heinz, <a href="/A354067/b354067.txt">Table of n, a(n) for n = 0..16</a>
%H A354067 Wikipedia, <a href="https://en.wikipedia.org/wiki/Polyomino">Polyomino</a>
%F A354067 a(n) = A353963(n,n).
%e A354067 a(2) = 6:
%e A354067   .___.  .___.  .___.  .___.  .___.  .___.
%e A354067   | |_|  | ._|  |_. |  |_| |  |_|_|  |   |
%e A354067   |___|  |_|_|  |_|_|  |___|  |_|_|  |___| .
%Y A354067 Main diagonal of A353963.
%K A354067 nonn
%O A354067 0,3
%A A354067 _Alois P. Heinz_, May 16 2022