A001072 Number of minimally 2-edge-connected non-isomorphic graphs with n nodes.

1, 1, 3, 4, 11, 23, 63, 159, 459, 1331, 4083, 12750

Offset

3,3

References

Calculated by Sridar K. Pootheri.

Links

Table of n, a(n) for n=3..14.

F. Hüffner, tinygraph, software for generating integer sequences based on graph properties, version d0efd85.

Jens M. Schmidt, Data files in graph6 format

Crossrefs

Cf. A324410.

Sequence in context: A005218 A219514 A131481 * A292623 A077900 A208176

Adjacent sequences: A001069 A001070 A001071 * A001073 A001074 A001075

Keyword

nonn,hard,more

Author

Robert W. Robinson

Extensions

a(11) and a(12) added using tinygraph by Falk Hüffner, Jan 20 2016

a(13) and a(14) added by Jens M. Schmidt, Feb 27 2019

Status

approved