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A208493 Number of pairs of complementary l_1-graphs among all graphs on n nodes. 0
0, 0, 1, 3, 18 (list; graph; refs; listen; history; text; internal format)
OFFSET

2,4

REFERENCES

Deza, Michel and Huang, Tayuan, Complementary l_1-graphs and related combinatorial structures, in Combinatorics and Computer Science (Brest, 1995), 74-90, Lecture Notes in Comput. Sci., 1120, Springer, Berlin, 1996.

S. Shpectorov, Complementary l_1-graphs, Discrete Math., 192 (1998), 323-331.

LINKS

Table of n, a(n) for n=2..6.

CROSSREFS

Sequence in context: A215913 A162713 A161473 * A082056 A082057 A161687

Adjacent sequences:  A208490 A208491 A208492 * A208494 A208495 A208496

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Mar 04 2012

STATUS

approved

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Last modified July 12 04:30 EDT 2020. Contains 335658 sequences. (Running on oeis4.)