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A005978 Number of dependable interval graphs with n nodes.
(Formerly M3554)
0
0, 0, 0, 0, 1, 4, 19, 93, 539, 3474, 24856, 192972, 1613219, 14410374, 136920388, 1378542639, 14663082556, 164340455701, 1936286904952, 23932267735948, 309701296575063 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,6

REFERENCES

Hanlon, Phil; Counting interval graphs. Trans. Amer. Math. Soc. 272 (1982), no. 2, 383-426.

P. J. Hanlon, personal communication.

N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

LINKS

Table of n, a(n) for n=1..21.

CROSSREFS

Sequence in context: A181950 A131552 A122369 * A083065 A137636 A027618

Adjacent sequences:  A005975 A005976 A005977 * A005979 A005980 A005981

KEYWORD

nonn

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified May 22 09:05 EDT 2013. Contains 225516 sequences.