A005965 Erroneous version of A000421.

1, 2, 6, 20, 91, 506

Offset: 1

Author

N. J. A. Sloane

Keywords

• dead

References

• A. T. Balaban, Enumeration of Cyclic Graphs, pp. 63-105 of A. T. Balaban, ed., Chemical Applications of Graph Theory, Ac. Press, 1976; see p. 92.
• N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).