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 A246731 Number of standard Young tableaux with 2n cells and largest value in row n. 1
 1, 1, 3, 14, 106, 971, 10616, 123330, 1557753, 20543071, 287087740, 4168599808, 63349129196, 996257865899, 16268585660692, 273934662738565, 4763228582494891, 85139749375446911, 1565168115090666500, 29500470904432682460, 570091884338189871500 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 COMMENTS Also the number of ballot sequences of length 2n having last value n. Also the number of standard Young tableaux with 2n cells where the row containing the largest value has length n. Also the number of ballot sequences of length 2n where the last value has multiplicity n. LINKS Table of n, a(n) for n=0..20. FORMULA a(n) = A238750(2n,n). CROSSREFS Cf. A238750. Sequence in context: A271213 A167017 A051106 * A349584 A258298 A121951 Adjacent sequences: A246728 A246729 A246730 * A246732 A246733 A246734 KEYWORD nonn AUTHOR Joerg Arndt and Alois P. Heinz, Sep 02 2014 STATUS approved

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Last modified February 26 09:21 EST 2024. Contains 370338 sequences. (Running on oeis4.)