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A348764
Number of unsensed 4-regular maps with 2*n edges on the projective plane.
3
2, 6, 29, 153, 1015, 7572, 62316, 548575, 5069705, 48490576, 475784885, 4760060954, 48363620851, 497636022164
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