8,2

G. Ringel, Wie man die geschlossenen nichtorientierbaren Flaechen in moeglichst wenig Dreiecke zerlegen kann, Math. Ann. 130 (1955), 317-326.

Thom Sulanke, Generating triangulations of surfaces (surftri), (also subpages).

Sequence in context: A160471 A138590 A069223 this_sequence A005334 A033511 A067156

Adjacent sequences: A129053 A129054 A129055 this_sequence A129057 A129058 A129059

nonn

N. J. A. Sloane (njas(AT)research.att.com), May 13 2007