OFFSET
2,1
REFERENCES
Reinaldo E. Guidici and Eduardo Lima de Sá, Chromatic uniqueness of certain bipartite graphs. Proceedings of the Twenty-first Southeastern Conference on Combinatorics, Graph Theory, and Computing (Boca Raton, FL, 1990). Congr. Numer. 76 (1990), 69-75. MR1140419 (92i:05094)
CROSSREFS
KEYWORD
nonn,more
AUTHOR
N. J. A. Sloane, Aug 27 2014
STATUS
approved