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A246818 Number of standard Young tableaux with 2n cells where n is the largest value in the last row. 1
1, 0, 1, 4, 32, 277, 3179, 41799, 632365, 10922385, 210953381, 4498975425, 105131807571, 2672061475343, 73358721633794, 2163013965362752, 68174082537113173, 2287395123402364673, 81397403660409278779, 3061825168335759481187, 121385088042529743488517, 5058460899905730365609710 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,4

COMMENTS

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

LINKS

Table of n, a(n) for n=0..21.

FORMULA

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

CROSSREFS

Cf. A238727.

Sequence in context: A036725 A065089 A113329 * A145710 A264633 A319183

Adjacent sequences:  A246815 A246816 A246817 * A246819 A246820 A246821

KEYWORD

nonn

AUTHOR

Joerg Arndt and Alois P. Heinz, Sep 04 2014

STATUS

approved

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Last modified February 19 04:06 EST 2020. Contains 332034 sequences. (Running on oeis4.)