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 A258586 Number of solid standard Young tableaux of shape [[{n}^(n+1)],[n]^n]. 2
 1, 2, 936, 1825221320, 70351928759681296000, 160978956785364112335731878007698260, 51488321677815455036453939239317069333712945710369620220, 4648889159675386017282064494039528050991187044317172798976485350954735075040045120 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 LINKS Table of n, a(n) for n=0..7. S. B. Ekhad, D. Zeilberger, Computational and Theoretical Challenges on Counting Solid Standard Young Tableaux, arXiv:1202.6229v1 [math.CO], 2012 Wikipedia, Young tableau MAPLE b:= proc(l) option remember; local m; m:= nops(l); `if`({map(x-> x[], l)[]}={0}, 1, add(add(`if`(l[i][j]> `if`(i=m or nops(l[i+1]) `if`(nops(l[i])=j, 0, l[i][j+1]), b(subsop(i=subsop( j=l[i][j]-1, l[i]), l)), 0), j=1..nops(l[i])), i=1..m)) end: a:= n-> b([[n\$(n+1)], [n]\$n]): seq(a(n), n=0..5); CROSSREFS Cf. A214722, A258583. Sequence in context: A070927 A070922 A332192 * A176940 A337309 A172386 Adjacent sequences: A258583 A258584 A258585 * A258587 A258588 A258589 KEYWORD nonn AUTHOR Alois P. Heinz, Nov 06 2015 STATUS approved

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Last modified August 6 14:16 EDT 2024. Contains 374974 sequences. (Running on oeis4.)