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A214334 Number of rooted maps with n edges on the non-orientable surface of type 2. 1
0, 0, 0, 0, 488, 23320, 696912, 16662492, 348539072, 6664492800, 119448394500, 2038649084648, 33485525450304, 533300750150792, 8280704684511728, 125874875824299840, 1879220531953481856, 27623679628336696672, 400620376541743419888, 5741857194453928418268, 81439444090140433607840, 1144400134614241780601088, 15947842815693549007349256, 220579463084992470012209008, 3030225572264584257706050816, 41371174793045515157274738000 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,5

REFERENCES

Arques, Didier; and Giorgetti, Alain. Counting rooted maps on a surface. Theoret. Comput. Sci. 234 (2000), no. 1-2, 255--272. MR1745078 (2001f:05078).

LINKS

Table of n, a(n) for n=0..25.

CROSSREFS

Cf. A118451 (analog for surface of type 3/2).

Sequence in context: A205315 A118449 A223398 * A201835 A201215 A214807

Adjacent sequences:  A214331 A214332 A214333 * A214335 A214336 A214337

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Jul 27 2012

STATUS

approved

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Last modified April 3 23:48 EDT 2020. Contains 333207 sequences. (Running on oeis4.)