PermPal Database

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Generating function in Maple format
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First 15 coefficients

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Av(123) Av(132) Av(123, 132) Av(123, 231) Av(123, 321) Av(132, 213) Av(132, 231) Av(123, 132, 213) Av(123, 132, 231) Av(123, 132, 321) Av(123, 231, 312) Av(132, 213, 231) Av(123, 132, 213, 231) Av(123, 132, 213, 321) Av(123, 132, 231, 312) Av(123, 132, 231, 321) Av(132, 213, 231, 312) Av(123, 132, 213, 231, 312) Av(123, 132, 213, 231, 321) Av(123, 132, 213, 231, 312, 321)