1,16
a(18) is known to be at least 13
Eric Weisstein's World of Mathematics, Hypohamiltonian Graph
Sequence in context: A115527 A050920 A001231 this_sequence A089418 A124856 A061858
Adjacent sequences: A141147 A141148 A141149 this_sequence A141151 A141152 A141153
nonn,more
E. W. Weisstein (eric(AT)weisstein.com), Jun 11, 2008
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