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A058803
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Vertically indecomposable lattices on n labeled nodes.
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2
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1, 1, 2, 0, 12, 140, 2910, 83202, 3170216, 154933704, 9441522810, 701275774430, 62304994315212, 6517432341289740, 791949368757587222, 110496962589020946330, 17525486812000086847440
(list; graph; refs; listen; history; internal format)
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