A284875 Values of m for which the complete bipartite graph K_{m,m} has a unique minimal coprime labeling.

1, 2, 5, 9, 11, 12, 19, 21, 24, 47, 105, 109, 117, 118, 131, 132, 137, 144, 145, 146, 188, 189, 190, 191, 192, 194, 195, 222, 223, 224, 225, 226, 227, 228, 229, 230, 231, 232, 287, 288, 289, 290, 291, 310, 311, 312, 314, 315, 316, 317, 333, 341, 342, 343, 365

Offset: 1

Author

Jonathan Sondow, May 14 2017

Keywords

• nonn

Comments

For definitions and examples, see A213273, A213806, and Berliner, Dean, Hook, Marr, Mbirika (2016) section 3.1.

Links

• Kevin Cuadrado, Table of n, a(n) for n = 1..294
• Adam H. Berliner, N. Dean, J. Hook, A. Marr, A. Mbirika, Coprime and prime labelings of graphs, arXiv:1604.07698 [math.CO], 2016.
• Eric Weisstein's World of Mathematics, Complete Bipartite Graph.

Crossrefs

Cf. A213273, A213806, A291465.

Formula

A213806(a(n)) = 1.

Extensions

a(9) onwards from Kevin Cuadrado, Dec 01 2020