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A006441 Nonseparable toroidal tree-rooted maps.
(Formerly M4754)
0
10, 595, 11010, 111650, 773640, 4104225, 17838730, 66390610, 218140650 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

REFERENCES

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

Walsh, T. R. S.; Lehman, A. B.; Counting rooted maps by genus. III: Nonseparable maps. J. Combinatorial Theory Ser. B 18 (1975), 222-259.

LINKS

Table of n, a(n) for n=0..8.

CROSSREFS

Sequence in context: A323532 A273032 A185277 * A042751 A285372 A308145

Adjacent sequences:  A006438 A006439 A006440 * A006442 A006443 A006444

KEYWORD

nonn

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified November 11 16:07 EST 2019. Contains 329019 sequences. (Running on oeis4.)