1,2

N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

G. Kreweras, Complexite et circuits Euleriens dans la sommes tensorielles de graphes, J. Combin. Theory, B 24 (1978), 202-212.

Sequence in context: A160156 A102052 A128714 this_sequence A017951 A129155 A070071

Adjacent sequences: A007339 A007340 A007341 this_sequence A007343 A007344 A007345

nonn

N. J. A. Sloane (njas(AT)research.att.com).

Probably an erroneous version of A001353.