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A113204 Same as A007022, but with orientation-reversing isomorphisms forbidden. 4
0, 0, 0, 0, 0, 1, 0, 1, 1, 4, 3, 15, 25, 92, 234, 803, 2469, 8512, 28290, 98148, 338673, 1188338, 4180854, 14840031, 52904562, 189724510, 683384218, 2472961423, 8984888982, 32772085447, 119963084542, 440623586740, 1623555117611 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,10

LINKS

Table of n, a(n) for n=1..33.

G. Brinkmann, S. Greenberg, C. Greenhill, B. D. McKay, R. Thomas, and P. Wollan, Generation of simple quadrangulations of the sphere, Discr. Math., 305 (2005), 33-54. doi:10.1016/j.disc.2005.10.005

Gunnar Brinkmann and Brendan McKay, plantri and fullgen programs for generation of certain types of planar graph.

Gunnar Brinkmann and Brendan McKay, plantri and fullgen programs for generation of certain types of planar graph [Cached copy, pdf file only, no active links, with permission]

CROSSREFS

Cf. A113201, A078666, A007022, A002880, A113202, A113205.

Sequence in context: A195586 A120461 A324013 * A270188 A010309 A169702

Adjacent sequences:  A113201 A113202 A113203 * A113205 A113206 A113207

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Jan 07 2006

EXTENSIONS

a(31) corrected by Brendan McKay, Jun 22 2006

a(1)=a(2)=...=a(7)=0 prepended by Max Alekseyev, Sep 13 2016

Two leading zeroes removed to match the definition by Andrey Zabolotskiy, Feb 09 2018

STATUS

approved

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Last modified September 15 12:22 EDT 2019. Contains 327078 sequences. (Running on oeis4.)