A210690 Erroneous version of A000421.

1, 2, 6, 20, 93

Offset

1,2

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).

Links

Table of n, a(n) for n=1..5.

Crossrefs

Sequence in context: A000421 A009244 A104985 * A079575 A078564 A079576

Adjacent sequences: A210687 A210688 A210689 * A210691 A210692 A210693

Keyword

dead

Author

N. J. A. Sloane, Mar 30 2012

Status

approved