A210690 Erroneous version of A000421.

1, 2, 6, 20, 93

Offset: 1

Author

N. J. A. Sloane, Mar 30 2012

Keywords

• dead

References

• Cadogan, C. C. Graph-lattices and the enumeration of linear graphs. 1970 Proc. Louisiana Conf. on Combinatorics, Graph Theory and Computing (Louisiana State Univ., Baton Rouge, La., 1970) pp. 61--86 Louisiana State Univ., Baton Rouge, La. MR0269553 (42 #4448).