OFFSET
1,2
COMMENTS
Original name was: Number of circuits of rank n.
In Foster's Figure 6, two graphs on 6 vertices are missing: one with edges {1-2, 2-3, 1-3, 4-5, 5-6, 4-6, 1-4, 2-5} and another with same edges plus 1-5. Thus a(5) is off by 2. - Andrey Zabolotskiy, Nov 01 2024
REFERENCES
N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
LINKS
R. M. Foster, Geometrical circuits of electrical networks, Transactions of the American Institute of Electrical Engineers, 51 (1932), 309-317.
CROSSREFS
KEYWORD
dead
AUTHOR
STATUS
approved