A358284 Number of connected planar cubic simple graphs on 2n unlabeled nodes with chromatic index 4.

0, 0, 0, 1, 3, 19, 98, 583, 3641, 24584, 174967, 1302969, 10038834, 79459168

Offset

2,5

Links

Table of n, a(n) for n=2..15.

Jan Goedgebeur and Patric R. J. Ostergard, Switching 3-Edge-Colorings of Cubic Graphs, arXiv:2105:01363 [math.CO], May 2021. See Table 3.

Crossrefs

Cf. A005964, A357446.

Sequence in context: A303542 A294251 A294392 * A198763 A047029 A095120

Adjacent sequences: A358281 A358282 A358283 * A358285 A358286 A358287

Keyword

nonn,more

Author

N. J. A. Sloane, Nov 08 2022

Extensions

Name corrected by Harry Richman, Oct 16 2025

a(13)-a(15) from Harry Richman, Oct 20 2025

Status

approved