On the maximum number of cycles in outerplanar and series-parallel graphs

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Abstract

Let c(n) be the maximum number of cycles in an outerplanar graph with n vertices. We show that limc(n)1/n exists and equals β=1.502837, where β is a constant related to the recurrence xn+1=1+xn2, x0=1. The same result holds for the larger class of series-parallel graphs.

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Supported by Project MTM2005-08618-C02-01

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