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A245000
Number of standard Young tableaux with 2n cells and n as last value in the first row.
2
1, 1, 2, 10, 66, 596, 6620, 87000, 1324715, 22908742, 443117232, 9479624946, 222233111144, 5664313424130, 155929751451474, 4610317083986067, 145702128028870279, 4901223985261545846, 174836302846627038524, 6591979801098305644386, 261927409786051251544292
OFFSET
0,3
COMMENTS
Also the number of ballot sequences of length 2n where n is the position of the last occurrence of the minimal value.
LINKS
Joerg Arndt and Alois P. Heinz, Table of n, a(n) for n = 0..25
Wikipedia, Young tableau
FORMULA
a(n) = A238794(2n,n).
EXAMPLE
a(2) = 2:
[1 2] [1 2]
[3] [3 4]
[4]
CROSSREFS
Cf. A238794.
Sequence in context: A377529 A108205 A228938 * A108397 A325995 A366178
KEYWORD
nonn
AUTHOR
Joerg Arndt and Alois P. Heinz, Jul 09 2014
STATUS
approved