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A244302
Number of standard Young tableaux with n cells such that the lengths of the first and the last row differ by 8.
2
9, 45, 539, 3290, 25234, 156743, 1042823, 6374389, 40710734, 245996972, 1533537330, 9295148728, 57412881670, 349869872571, 2159393201713, 13252915145611, 82161769477646, 508497521855467, 3174435344149894, 19827435510586970, 124802677329672826
OFFSET
10,1
COMMENTS
Also the number of ballot sequences of length n such that the multiplicities of the largest and the smallest value differ by 8.
LINKS
MAPLE
h:= proc(l) local n; n:=nops(l); add(i, i=l)!/mul(mul(1+l[i]-j+
add(`if`(l[k]>=j, 1, 0), k=i+1..n), j=1..l[i]), i=1..n) end:
g:= proc(n, i, l) local j; `if`(n=0 or i<1, 0, `if`(l<>[] and
l[1]-i=8, `if`(irem(n, i, 'j')=0, h([l[], i$j]), 0),
add(g(n-i*j, i-1, [l[], i$j]), j=0..n/i)))
end:
a:= n-> g(n$2, []):
seq(a(n), n=10..35);
CROSSREFS
Column k=8 of A238707.
Sequence in context: A009432 A145757 A058824 * A177742 A322892 A355175
KEYWORD
nonn
AUTHOR
Joerg Arndt and Alois P. Heinz, Jun 25 2014
STATUS
approved