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A204233
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Permanent of the n-th principal submatrix of A204016.
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2
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0, 1, 4, 49, 792, 18953, 610796, 25648641, 1359184384, 88722005809, 6994262098260, 655126226755025, 71915748374032232, 9144536677714434105, 1333394182537641307324, 221002933797466121742433
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OFFSET
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1,3
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LINKS
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MATHEMATICA
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f[i_, j_] := Max[Mod[i, j], Mod[j, i]];
m[n_] := Table[f[i, j],
{i, 1, n}, {j, 1, n}] (* A204016 *)
Permanent[m_] :=
With[{a = Array[x, Length[m]]},
Coefficient[Times @@ (m.a), Times @@ a]];
Table[Permanent[m[n]], {n, 1, 16}] (* A204233 *)
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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