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Search: id:A135515
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| A135515 |
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Number of inequivalent drawings of the complete graph Kn on n vertices that attain the corresponding rectilinear crossing number (A014540). |
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+0
1
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OFFSET
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4,4
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COMMENT
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Some lower bounds: a(12) >=, a(13) >= 272, a(14) >= 2, a(15) >= 360, a(16) >= 7, a(17) >= 7532, a(18) >= 2, a(19) >= 069 and a(20) >= 4
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LINKS
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O. Aichholzer, F. Aurenhammer and H. Krasser, On the crossing number of complete graphs., Computing, 76:165-176, 2006.
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CROSSREFS
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Sequence in context: A049971 A156528 A092502 this_sequence A114486 A090780 A063549
Adjacent sequences: A135512 A135513 A135514 this_sequence A135516 A135517 A135518
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KEYWORD
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hard,more,nonn
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AUTHOR
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Don Pedro Esq. (info(AT)servierlaboratories.org), Feb 09 2008
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