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Several graph sequences as solutions of a double recurrence

We describe the combinatorics that arise in summing a double recursion formula for the enumeration of connected Feynman graphs in quantum field theory. In one index the problem is more tractable and yields concise formulas which are combinatorially interesting on their own. In the other index, one of these sums is Sloane's sequence A001865.

preprint2015arXivOpen access
Christian BrouderWilliam J. KeithÂngela Mestre
math.CO
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Open access3 authors1 topic
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Citations: 0Reviews: 0Saves: 0Code: not linkedDataset: not linkedInstitutions: 0

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Christian BrouderWilliam J. KeithÂngela Mestre

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