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A358815
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Number of spanning trees in C_10 X C_n.
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1
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10, 226195360, 135495143785470, 31074298464967845120, 5040439500800000000000000, 701129416495732552572667500000, 90098172307754257628918141363625670, 11062145603354190616166421646710839715840
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OFFSET
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1,1
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LINKS
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Table of n, a(n) for n=1..8.
Eric Weisstein's World of Mathematics, Spanning Tree
Eric Weisstein's World of Mathematics, Torus Grid Graph
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PROG
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(PARI) default(realprecision, 120);
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)));
a(n) = T(10, n);
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CROSSREFS
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Row 10 of A212796.
Sequence in context: A220145 A057141 A034249 * A131679 A259391 A279540
Adjacent sequences: A358812 A358813 A358814 * A358816 A358817 A358818
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KEYWORD
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nonn
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AUTHOR
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Seiichi Manyama, Dec 02 2022
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STATUS
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approved
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