This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A352022 #10 Mar 05 2022 01:06:06 %S A352022 1,6,176400,95437674624600,878617506040998925900403712, %T A352022 134527385723138237635420920683683500322908000, %U A352022 339161155484890894029987276076070590877762998258747782208794132480,14004953513181662639884345044013838519837158205213642081126147144590500534440163767670000000 %N A352022 Number of spanning trees in a hexagon of size n in the hexagonal grid. %C A352022 The hexagon of size n in the hexagonal grid has A033581(n) = 6*n^2 vertices. %H A352022 Peter Kagey, <a href="/A352022/a352022.png">Image of one of the a(3) = 95437674624600 spanning trees on a hexagon of size 3.</a> %Y A352022 Cf. A007341 (square in square grid), A116469 (rectangle in square grid), A174579 (triangle in triangular grid), A351888 (triangle in hexagonal grid), A351994 (hexagon in triangular grid). %K A352022 nonn %O A352022 0,2 %A A352022 _Peter Kagey_, Feb 28 2022