OFFSET
0,3
LINKS
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,
0,488,
0,11660,375552,
0,160680,6652366,146387872,
0,1678880,86303920,2298445830,42795288180,
0,14771680,918342738,28995928200,629732269188,10663498973088,
...
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
N. J. A. Sloane, Jul 28 2012
STATUS
approved