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 A093716 Hook products of all partitions of 5. 1
 20, 24, 24, 30, 30, 120, 120 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS a(n) = 5!/A003869(n). LINKS MAPLE H:=proc(pa) local F, j, p, Q, i, col, a, A: F:=proc(x) local i, ct: ct:=0: for i from 1 to nops(x) do if x[i]>1 then ct:=ct+1 else fi od: ct; end: for j from 1 to nops(pa) do p[1][j]:=pa[j] od: Q[1]:=[seq(p[1][j], j=1..nops(pa))]: for i from 2 to pa[1] do for j from 1 to F(Q[i-1]) do p[i][j]:=Q[i-1][j]-1 od: Q[i]:=[seq(p[i][j], j=1..F(Q[i-1]))] od: for i from 1 to pa[1] do col[i]:=[seq(Q[i][j]+nops(Q[i])-j, j=1..nops(Q[i]))] od: a:=proc(i, j) if i<=nops(Q[j]) and j<=pa[1] then Q[j][i]+nops(Q[j])-i else 1 fi end: A:=matrix(nops(pa), pa[1], a): product(product(A[m, n], n=1..pa[1]), m=1..nops(pa)); end: with(combinat): rev:=proc(a) [seq(a[nops(a)+1-i], i=1..nops(a))] end: sort([seq(H(rev(partition(5)[q])), q=1..numbpart(5))]); CROSSREFS Cf. A003869, A093784. Sequence in context: A013339 A199360 A199585 * A117737 A062908 A111323 Adjacent sequences:  A093713 A093714 A093715 * A093717 A093718 A093719 KEYWORD fini,full,nonn AUTHOR Emeric Deutsch, May 17 2004 STATUS approved

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Last modified October 27 23:26 EDT 2020. Contains 338047 sequences. (Running on oeis4.)