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A172023
Number of Sona graphs.
1
1, 1, 1, 3, 5, 13, 38, 133, 534
OFFSET
1,4
COMMENTS
See Table 1, column 2 of the paper by E. D. Demaine et al. for details.
LINKS
E. D. Demaine, M. L. Demaine, P. Taslakian and G. T. Toussaint, Sand drawings and Gaussian graphs, Journal of Mathematics and the Arts, 1 (2007), 125-133.
EXAMPLE
The number of Sona graphs with nine faces is 534.
CROSSREFS
Sequence in context: A190423 A278024 A198636 * A271667 A188583 A259932
KEYWORD
nonn,more
AUTHOR
Parthasarathy Nambi, Jan 22 2010
STATUS
approved