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A192098
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Number of distinct (unordered) pairs of partitions of an 8-element set that have Rand distance n.
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4
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5684, 23772, 69272, 183960, 391356, 696178, 941088, 1182888, 1150520, 1165416, 815640, 780570, 413840, 369180, 178080, 115780, 43512, 20734, 6860, 7098, 3508, 574, 840, 665, 476, 210, 28, 1
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OFFSET
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1,1
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COMMENTS
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The Rand distance of a pair of set partitions is the number of unordered pairs {x; y} such that there is a block in one partition containing both x and y, but x and y are in different blocks in the other partition.
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CROSSREFS
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KEYWORD
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nonn,fini,full
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AUTHOR
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Frank Ruskey and Yuji Yamauchi (eugene.uti(AT)gmail.com), Jul 21 2011
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STATUS
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approved
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