A208493 Number of pairs of complementary l_1-graphs among all graphs on n nodes.

0, 0, 1, 3, 18

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