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

1,2

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.

Formula

A213806(a(n)) = 1.

Crossrefs

Cf. A213273, A213806, A291465.

Sequence in context: A005123 A332821 A283481 * A154732 A242936 A080154

Adjacent sequences: A284872 A284873 A284874 * A284876 A284877 A284878

Keyword

nonn

Author

Jonathan Sondow, May 14 2017

Extensions

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

Status

approved