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A054937 Number of chiral planar maps on n nodes up to orientation-preserving isomorphisms. 0
0, 0, 0, 5, 64, 655, 5858, 51369, 448982, 3967466, 35603366, 324990677, 3016738988, 28449849867, 272233685444, 2639649712580, 25902435997188 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,4
LINKS
V. A. Liskovets, Some easily derivable sequences, J. Integer Sequences, 3 (2000), #00.2.2.
FORMULA
a(n) = A006385(n)-A054936(n). - R. J. Mathar, Oct 01 2011
CROSSREFS
Sequence in context: A222455 A351855 A178295 * A302993 A266095 A255523
KEYWORD
nonn,easy
AUTHOR
N. J. A. Sloane, May 24 2000
STATUS
approved

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Last modified March 18 22:09 EDT 2024. Contains 370951 sequences. (Running on oeis4.)