%I #39 Mar 05 2022 01:05:54

%S 1,320,2300606464,289899537900576358400,

%T 614482906548854364363387716704247808,

%U 21564742087547836976004856537464240189331001616154755072,12433415382338420812828401445037903120443542018197863908895102595928462876835840

%N Number of spanning trees in a hexagon of size n in the triangular grid.

%C The hexagon of size n in the triangular grid has A003215(n) vertices.

%H Peter Kagey, <a href="/A351994/a351994.png">Image of one of the a(4) = 614482906548854364363387716704247808 spanning trees of size 4.</a>

%Y Cf. A007341 (square in square grid), A116469 (rectangle in square grid), A174579 (triangle in triangular grid), A351888 (triangle in hexagonal grid), A352022 (hexagon in hexagonal grid).

%K nonn

%O 0,2

%A _Peter Kagey_, Feb 28 2022