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 A358811 #10 Feb 16 2025 08:34:04 %S A358811 6,117600,292626432,428652000000,522217835532030,587312954081280000, %T A358811 633426582213424399722,665880333340217184000000, %U A358811 687776414074843514847584256,701129416495732552572667500000,707405677027691828669857196745186 %N A358811 Number of spanning trees in C_6 X C_n. %H A358811 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/SpanningTree.html">Spanning Tree</a> %H A358811 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/TorusGridGraph.html">Torus Grid Graph</a> %o A358811 (PARI) default(realprecision, 120); %o A358811 T(n, k) = round(n*k*prod(a=1, n-1, prod(b=1, k-1, 4*sin(a*Pi/n)^2+4*sin(b*Pi/k)^2))); %o A358811 a(n) = T(6, n); %Y A358811 Row 6 of A212796. %K A358811 nonn %O A358811 1,1 %A A358811 _Seiichi Manyama_, Dec 02 2022