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A214337 Triangle read by rows: T(n,k) = number of rooted maps with n vertices and k faces on a non-orientable surface of type 3/2 (0 <= k <= n). 5
0, 0, 41, 0, 690, 16925, 0, 7150, 237652, 4306778, 0, 58760, 2518957, 56864524, 910734615, 0, 420182, 22417804, 613687758, 11675167470, 174833737848 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

0,3

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..20.

EXAMPLE

Triangle begins:

0,

0,41,

0,690,16925,

0,7150,237652,4306778,

0,58760,2518957,56864524,910734615,

0,420182,22417804,613687758,11675167470,174833737848,

...

CROSSREFS

Diagonals give A118448, A214335, A213336, A213338.

Cf. A214806.

Sequence in context: A111401 A116101 A167265 * A053342 A297205 A283895

Adjacent sequences:  A214334 A214335 A214336 * A214338 A214339 A214340

KEYWORD

nonn,tabl

AUTHOR

N. J. A. Sloane, Jul 27 2012

STATUS

approved

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Last modified February 21 23:41 EST 2020. Contains 332113 sequences. (Running on oeis4.)