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A238126
Number of standard Young tableaux with n cells and exactly one succession.
3
0, 0, 1, 1, 3, 8, 24, 70, 224, 744, 2588, 9317, 34924, 135297, 542123, 2236834, 9508297, 41511215, 186109781, 854874944, 4021672983, 19344343843, 95093249014, 477137036748, 2442413708120, 12742038926613, 67714763161526, 366266085720565, 2015454903261855
OFFSET
0,5
COMMENTS
A succession is a pair of cells (v, v+1) lying in the same row.
Also number of ballot sequences having one flat step.
Second column (k=1) of A238125.
CROSSREFS
Cf. A237770 (no successions), A238127 (two successions).
Sequence in context: A095125 A078055 A291613 * A079121 A027077 A291243
KEYWORD
nonn
AUTHOR
Joerg Arndt and Alois P. Heinz, Feb 21 2014
STATUS
approved