A241706 Number of simple connected graphs on n nodes with diameter 2.

0, 0, 1, 4, 14, 59, 373, 4154, 91518, 4116896

Offset: 1

Author

Travis Hoppe and Anna Petrone, Apr 27 2014

Keywords

• nonn
• hard
• more

Links

• Travis Hoppe and Anna Petrone, Encyclopedia of Finite Graphs
• Travis Hoppe and Anna Petrone, Integer sequence discovery from small graphs, arXiv preprint arXiv:1408.3644 [math.CO], 2014.
• Peter Steinbach, Field Guide to Simple Graphs, Volume 1, Part 17 [But beware errors] (For Volumes 1, 2, 3, 4 of this book see A000088, A008406, A000055, A000664, respectively.)
• Eric Weisstein's World of Mathematics, Graph Diameter

Crossrefs

Column k=2 of A294522.

Simple connected graphs of diameter k: A241706, A241707, A241708, A241709, A241710.