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A308588 Number of 4-regular 3-connected planar graphs with n vertices having an Eulerian tour for which no two consecutive edges are incident with the same face. 0
1, 1, 1, 1, 3, 5, 17, 40, 145, 355, 1264, 3931, 12999, 44727 (list; graph; refs; listen; history; text; internal format)
OFFSET

8,5

COMMENTS

Polyhedra formed by knot diagrams.

LINKS

Table of n, a(n) for n=8..21.

CROSSREFS

Cf. A007022.

Sequence in context: A148521 A303839 A148522 * A141160 A336380 A113275

Adjacent sequences:  A308585 A308586 A308587 * A308589 A308590 A308591

KEYWORD

nonn,more

AUTHOR

Jan Kristian Haugland, Jun 09 2019

STATUS

approved

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Last modified May 12 15:33 EDT 2021. Contains 343825 sequences. (Running on oeis4.)