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genfunc[rgf_charseq] - find characteristic sequence of a rational generating function
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Calling Sequence
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rgf_charseq(Fz, z, Fn, n)
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Parameters
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Fz
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rational generating function
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z
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name, generating function variable
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Fn
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expression for nth term of the sequence encoded by Fz
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n
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name, index variable for Fn
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Description
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This command returns the characteristic sequence of Fz as a function of Fn.
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The characteristic generating function Cz of Fz is defined as:
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The sequence encoded by Cz is the characteristic sequence of Fz.
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The value FAIL is returned if Fz is a trivial rational generating function.
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The command with(genfunc,rgf_charseq) allows the use of the abbreviated form of this command.
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Examples
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