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A259863
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Number of rooted highly irregular trees with n nodes.
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4
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1, 1, 0, 2, 0, 0, 0, 4, 9, 5, 0, 0, 0, 7, 15, 16, 34, 72, 133, 250, 399, 572, 828, 1176, 1700, 2509, 3456, 4494, 5887, 7980, 11625, 18064, 28710, 46665, 77070, 127187, 209300, 341674, 550078, 873272
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OFFSET
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1,4
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LINKS
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Alavi, Yousef, Gary Chartrand, Fan RK Chung, Paul Erdős, Ronald L. Graham, and Ortrud R. Oellermann, Highly irregular graphs, Journal of Graph Theory, 11, no. 2 (1987): 235-249.
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CROSSREFS
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KEYWORD
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nonn,more
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AUTHOR
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STATUS
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approved
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