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A348766
Number of unsensed 4-regular maps with 2*n edges on the Klein bottle.
1
2, 17, 182, 2480, 39386, 683425, 12420653, 231663025, 4389204048, 8404711549, 1622042005924, 31498163968678, 614779607286912, 12051129466850869
OFFSET
1,1
REFERENCES
Krasko, Evgeniy, and Alexander Omelchenko. "Enumeration of unsensed r-regular maps on the projective plane and the Klein bottle." Discrete Mathematics 344.11 (2021): #112528.
CROSSREFS
KEYWORD
nonn,more
AUTHOR
N. J. A. Sloane, Oct 31 2021
STATUS
approved