2,2
Walsh, T. R. S.; Lehman, A. B.; Counting rooted maps by genus. III: Nonseparable maps. J. Combinatorial Theory Ser. B 18 (1975), 222-259.
Sequence in context: A020870 A007229 A039685 this_sequence A088891 A094034 A020931
Adjacent sequences: A006415 A006416 A006417 this_sequence A006419 A006420 A006421
nonn
njas
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