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A079569 Number of unlabeled, connected graphs on n vertices which have no induced subgraph isomorphic to a P5 and are chordal and prime. 0

%I #8 Jan 18 2016 02:10:00

%S 0,0,0,1,1,5,15,68,343,2131,16020,150841

%N Number of unlabeled, connected graphs on n vertices which have no induced subgraph isomorphic to a P5 and are chordal and prime.

%C P5 = path on five vertices. G chordal iff every cycle of size 4 or more has a chord. G prime if it has no module (homogeneous set.)

%D A. Brandstadt, F. Dragan, H.O. Le, R. Mosca, "New Graph Classes of Bounded Clique-Width," manuscript, 2002.

%H F. Hüffner, <a href="https://github.com/falk-hueffner/tinygraph">tinygraph</a>, software for generating integer sequences based on graph properties, version e8699da.

%K more,nonn

%O 1,6

%A _Jim Nastos_, Jan 24 2003

%E a(10)-a(12) added using tinygraph by _Falk Hüffner_, Jan 17 2016

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Last modified August 7 01:21 EDT 2024. Contains 375002 sequences. (Running on oeis4.)