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%I A351994 #39 Mar 05 2022 01:05:54
%S A351994 1,320,2300606464,289899537900576358400,
%T A351994 614482906548854364363387716704247808,
%U A351994 21564742087547836976004856537464240189331001616154755072,12433415382338420812828401445037903120443542018197863908895102595928462876835840
%N A351994 Number of spanning trees in a hexagon of size n in the triangular grid.
%C A351994 The hexagon of size n in the triangular grid has A003215(n) vertices.
%H A351994 Peter Kagey, <a href="/A351994/a351994.png">Image of one of the a(4) = 614482906548854364363387716704247808 spanning trees of size 4.</a>
%Y A351994 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 A351994 nonn
%O A351994 0,2
%A A351994 _Peter Kagey_, Feb 28 2022

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