1,3

R. C. Read, On the enumeration of a class of plane multigraphs, Aequat. Math., 31 (1986), 47-63.

Adjacent sequences: A007166 A007167 A007168 this_sequence A007170 A007171 A007172

Sequence in context: A050637 A020023 A027836 this_sequence A106327 A009309 A075817

nonn

njas