A287229 Number of independent vertex sets and vertex covers in the n-triangular honeycomb obtuse knight graph.

2, 8, 64, 250, 1008, 7005, 125979, 2195964, 35271470, 628776316, 20151270950, 985420227285, 56533288822267, 3498291331182056

Offset: 1

Author

Eric W. Weisstein, May 22 2017

Keywords

• nonn
• more

Links

• Stan Wagon, Graph Theory Problems from Hexagonal and Traditional Chess, The College Mathematics Journal, Vol. 45, No. 4, September 2014, pp. 278-287.
• Eric Weisstein's World of Mathematics, Independent Vertex Set
• Eric Weisstein's World of Mathematics, Vertex Cover