%N Optimal towns for n>=1.
%C An n-town, n an integer, is a group of n buildings, each occupying a distinct position on a 2-dimensional integer grid. If we measure the distance between two buildings along the axis-parallel street grid, then an n-town has optimal shape if the sum of all pairwise Manhattan distances is minimized. (Data for this sequence are from Table 1, page 18, see reference link.)
%H Erik D. Demaine, Sandor P. Fekete, Guenter Rote, Nils Schweer, Daria Schymura, Mariano Zelke, <a href="http://arxiv.org/abs/1009.5628">Integer Point Sets Minimizing Average Pairwise L1-Distance: What is the Optimal Shape of a Town?</a>, arXiv:1009.5628 [cs.CG], 2010.
%H R. M. Karp, A. C. McKellar, C. K. Wong, <a href="https://doi.org/10.1137/0204023">Near-Optimal Solutions to a 2-Dimensional Placement Problem,</a> SIAM J. Comput., 4(3), 271-286.
%Y Cf. A290190.
%A _Ctibor O. Zizka_, Jul 26 2011