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).

0, 0, 41, 0, 690, 16925, 0, 7150, 237652, 4306778, 0, 58760, 2518957, 56864524, 910734615, 0, 420182, 22417804, 613687758, 11675167470, 174833737848

Offset

0,3

Links

Table of n, a(n) for n=0..20.

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

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