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A005645 Number of 3-connected planar maps with n edges.
(Formerly M0599)
1
1, 0, 1, 2, 3, 4, 15, 32, 89, 266, 797, 2496, 8012, 26028, 85888, 286608, 965216, 3278776, 11221548, 38665192, 134050521, 467382224, 1638080277, 5768886048, 20407622631, 72494277840, 258527335373, 925322077852, 3323258053528, 11973883092034, 43273374700200, 156836969693756, 569967330200576, 2076647113454878, 7584534277720818, 27764845224462192, 101862027752012402, 374484866509396780, 1379489908513460150 (list; graph; refs; listen; history; text; internal format)
OFFSET

6,4

REFERENCES

N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

LINKS

N. J. A. Sloane, Table of n, a(n) for n = 6..50

T. R. S. Walsh, Number of sensed planar maps with n edges and m vertices

T. R. S. Walsh, Counting nonisomorphic three-connected planar maps, J. Combin. Theory Ser. B 32 (1982), no. 1, 33-44.

CROSSREFS

Sequence in context: A270929 A103096 A295757 * A281586 A217714 A076965

Adjacent sequences:  A005642 A005643 A005644 * A005646 A005647 A005648

KEYWORD

nonn

AUTHOR

N. J. A. Sloane. More terms and b-file added May 08 2012.

STATUS

approved

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Last modified October 15 12:31 EDT 2019. Contains 328026 sequences. (Running on oeis4.)