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A241785
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Number of standard Young tableaux with 2n cells and exactly n successions.
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1
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1, 1, 2, 9, 49, 322, 2411, 19868, 178832, 1724689, 17728545, 192634930, 2201760840, 26341552085, 328644606302, 4261866683006, 57288746422850, 796337785825197, 11422744246417607, 168765251734898485, 2564015637845130072, 39998356172536082076, 639840751503820832346
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OFFSET
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0,3
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COMMENTS
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A succession is a pair of cells (v, v+1) lying in the same row.
Also number of ballot sequences of length 2n having exactly n flat steps.
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LINKS
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FORMULA
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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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