OFFSET
1,3
COMMENTS
A bull-graph is formed by adding a 5th vertex to a 4-path adjacent only to the middle two vertices on the path.
LINKS
C. De Simone and A. Sassano, Stability number of bull- and chair-free graphs, Discrete Appl. Math. 41 (1993) 121-129.
Travis Hoppe and Anna Petrone, Encyclopedia of Finite Graphs
Falk Hüffner, tinygraph, software for generating integer sequences based on graph properties, version ece94ef.
Eric Weisstein's World of Mathematics, Bull Graph
CROSSREFS
KEYWORD
nonn,more
AUTHOR
Jim Nastos, Jan 24 2003
EXTENSIONS
a(10)-a(13) added using tinygraph by Falk Hüffner, Jan 15 2016
STATUS
approved