I do not know how many of these terms have been proved to be correct.
Table of n, a(n) for n=2..16.
Mirka Miller, Hebert Perez-Roses, and Joe Ryan, The Maximum Degree-and-Diameter-Bounded Subgraph in the Mesh, arXiv preprint arXiv:1203.4069 [math.CO], 2012.
Sequence in context: A103801 A141247 A049632 * A276983 A061227 A274522
Adjacent sequences: A216729 A216730 A216731 * A216733 A216734 A216735
N. J. A. Sloane, Sep 17 2012