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A244300 Number of standard Young tableaux with n cells such that the lengths of the first and the last row differ by 6. 2

%I

%S 7,28,279,1354,8823,45553,256192,1328368,7272035,37498159,201732490,

%T 1052038304,5628260010,29642509180,158744001098,844461334762,

%U 4549886593291,24435491901926,132677029062176,719558882421952,3940213225673584,21584248413514700

%N Number of standard Young tableaux with n cells such that the lengths of the first and the last row differ by 6.

%C Also the number of ballot sequences of length n such that the multiplicities of the largest and the smallest value differ by 6.

%H Alois P. Heinz, <a href="/A244300/b244300.txt">Table of n, a(n) for n = 8..100</a>

%p h:= proc(l) local n; n:=nops(l); add(i, i=l)!/mul(mul(1+l[i]-j+

%p add(`if`(l[k]>=j, 1, 0), k=i+1..n), j=1..l[i]), i=1..n) end:

%p g:= proc(n, i, l) local j; `if`(n=0 or i<1, 0, `if`(l<>[] and

%p l[1]-i=6, `if`(irem(n, i, 'j')=0, h([l[], i$j]), 0),

%p add(g(n-i*j, i-1, [l[], i$j]), j=0..n/i)))

%p end:

%p a:= n-> g(n$2, []):

%p seq(a(n), n=8..35);

%Y Column k=6 of A238707.

%K nonn

%O 8,1

%A _Joerg Arndt_ and _Alois P. Heinz_, Jun 25 2014

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Last modified October 2 08:07 EDT 2022. Contains 357191 sequences. (Running on oeis4.)