A241703 Number of simple unlabeled n-node graphs of edge-connectivity 4.

0, 0, 0, 0, 1, 3, 25, 378, 14306, 1141575, 164245876, 39637942895

Offset

1,6

Links

Table of n, a(n) for n=1..12.

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 [math.CO], 2014.

Jens M. Schmidt, Combinatorial data.

Eric Weisstein's World of Mathematics, k-Edge Connected Graph.

Crossrefs

Column k=4 of A263296.

Cf. other edge-connectivity unlabeled graph sequences A052446, A052447, A052448, A241704, A241705.

Sequence in context: A295765 A012481 A132617 * A251569 A319122 A304858

Adjacent sequences: A241700 A241701 A241702 * A241704 A241705 A241706

Keyword

nonn,hard,more

Author

Travis Hoppe and Anna Petrone, Apr 27 2014

Extensions

a(11) by Jens M. Schmidt, Feb 18 2019

a(12) from Jens M. Schmidt's web page, Jan 10 2021

Status

approved