September Morn Update
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6856 changed files with 141342 additions and 21127 deletions
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@ -1,14 +1,10 @@
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s[m_, p_, n_] :=
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CycleIndexPolynomial[SymmetricGroup[m],
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Table[ComposeSeries[p, x^i + O[x]^(n + 1)], {i, m}]];
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G000598[n_] := Nest[1 + x s[3, #, n] &, 1 + O[x], n];
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G000602[n_] :=
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Block[{x},
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x*CycleIndexPolynomial[SymmetricGroup[4],
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Table[ComposeSeries[#, x^i + O[x]^(n + 1)], {i, 4}]] -
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CycleIndexPolynomial[SymmetricGroup[2],
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Table[ComposeSeries[# - 1, x^i + O[x]^(n + 1)], {i, 2}]] +
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ComposeSeries[#, x^2 + O[x]^(n + 1)] &@
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Fold[Series[
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1 + x/6 (#1^3 + 3 #1 ComposeSeries[#1, x^2 + O[x]^#2] +
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2 ComposeSeries[#1, x^3 + O[x]^#2]), {x, 0, #2}] &,
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1 + O[x], Range[n + 1]]];
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x s[4, #, n] - s[2, # - 1, n] +
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ComposeSeries[#, x^2 + O[x]^(n + 1)] &[G000598[n]];
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A000602[n_] := SeriesCoefficient[G000602[n], n];
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A000602List[n_] := CoefficientList[G000602[n], x];
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Grid@Transpose@{Range[0, 200], A000602List@200}
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