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A066544 Number of spanning trees in the line graph of the product of two star graphs, each of order n, L(S_n x S_n). 0
4, 69360, 25181448044544, 500282053019322336000000000, 1364205042837678184255639132540659302400000000, 1119704625219101611411719462621416231171361585800882437615771859939328 (list; graph; refs; listen; history; text; internal format)
OFFSET

2,1

LINKS

Table of n, a(n) for n=2..7.

EXAMPLE

NumberOfSpanningTrees(L(S_3 x S_3)) = 69360

MATHEMATICA

NumberOfSpanningTrees[LineGraph[GraphProduct[Star[n], Star[n]]]] (* First load package DiscreteMath`Combinatorica` *)

CROSSREFS

Sequence in context: A276718 A102200 A257769 * A009529 A339450 A273231

Adjacent sequences: A066541 A066542 A066543 * A066545 A066546 A066547

KEYWORD

nonn

AUTHOR

Roberto E. Martinez II, Jan 07 2002

EXTENSIONS

Edited by Dean Hickerson, Jan 14, 2002

STATUS

approved

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Last modified December 2 12:34 EST 2022. Contains 358496 sequences. (Running on oeis4.)