A246818 Number of standard Young tableaux with 2n cells where n is the largest value in the last row.

1, 0, 1, 4, 32, 277, 3179, 41799, 632365, 10922385, 210953381, 4498975425, 105131807571, 2672061475343, 73358721633794, 2163013965362752, 68174082537113173, 2287395123402364673, 81397403660409278779, 3061825168335759481187, 121385088042529743488517, 5058460899905730365609710

Offset: 0

Author

Joerg Arndt and Alois P. Heinz, Sep 04 2014

Keywords

• nonn

Comments

Also the number of ballot sequences of length 2n having the last occurrence of the maximal value at position n.

Crossrefs

Cf. A238727.

Formula

a(n) = A238727(2n,n).