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A129060
Number of n-node triangulations of the nonorientable surface N_5 in which every node has degree >= 6.
0
0, 2, 5839, 1117750, 41548569
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OFFSET
8,2
LINKS
Table of n, a(n) for n=8..12.
G. Ringel,
Wie man die geschlossenen nichtorientierbaren Flächen in möglichst wenig Dreiecke zerlegen kann
, Math. Ann. 130 (1955), 317-326.
Thom Sulanke,
Generating triangulations of surfaces (surftri)
, (also subpages).
CROSSREFS
Sequence in context:
A078933
A064029
A057645
*
A190127
A099690
A196750
Adjacent sequences:
A129057
A129058
A129059
*
A129061
A129062
A129063
KEYWORD
nonn
,
more
AUTHOR
N. J. A. Sloane
, May 13 2007
STATUS
approved
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Last modified April 19 10:56 EDT 2024. Contains 371791 sequences. (Running on oeis4.)