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A321062
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Number of ordered pairs (p,q) of permutations of [n] with equal up-down signatures and p(1)=q(1)=6.
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1
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1216, 19312, 467696, 15608288, 678914816, 37083546112, 2475764410944, 197890932247680, 18629724957708800, 2038137238577944576, 256240757035057154048, 36670707901174666768384, 5924904192825339158446080, 1073049649261575998090559488
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OFFSET
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6,1
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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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