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A362828
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Number of n-tuples of permutations of [n] that pairwise commute.
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2
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1, 1, 4, 48, 2016, 130440, 30672720, 11608682400, 12055770800640, 24154259257215360, 117792549941415955200, 1161512734993746635808000, 25629823970496421449477580800, 1215203193235691517749414518195200, 123585796012441765074167804498857267200
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OFFSET
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0,3
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COMMENTS
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Two permutations x,y on [n] commute if x*y = y*x.
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LINKS
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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