A241770 Number of simple connected graphs with n nodes and exactly 4 articulation points (cutpoints).

0, 0, 0, 0, 0, 1, 7, 60, 527, 6056

Offset

1,7

Links

Table of n, a(n) for n=1..10.

Travis Hoppe and Anna Petrone, Encyclopedia of Finite Graphs

T. Hoppe and A. Petrone, Integer sequence discovery from small graphs, arXiv preprint arXiv:1408.3644, 2014

Eric Weisstein's World of Mathematics, Articulation Vertex

Crossrefs

Column k=4 of A325111.

Cf. other simple connected graph sequences with k articulation points A002218, A241767, A241768, A241769, A241770, A241771.

Sequence in context: A015570 A290756 A024090 * A243695 A210988 A222651

Adjacent sequences: A241767 A241768 A241769 * A241771 A241772 A241773

Keyword

nonn,hard,more

Author

Travis Hoppe and Anna Petrone, Apr 28 2014

Status

approved