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A290719
Number of (non-null) connected induced subgraphs in the n X n black bishop graph.
4
1, 3, 22, 168, 5251, 194751, 27478594, 3852814320, 2065546517563
OFFSET
1,2
LINKS
Eric Weisstein's World of Mathematics, Black Bishop Graph
Eric Weisstein's World of Mathematics, Connected Graph
Eric Weisstein's World of Mathematics, Vertex-Induced Subgraph
CROSSREFS
Sequence in context: A164021 A192365 A074578 * A074576 A077244 A362691
KEYWORD
nonn,more
AUTHOR
Eric W. Weisstein, Aug 09 2017
EXTENSIONS
a(8)-a(9) from Andrew Howroyd, Aug 15 2017
STATUS
approved