2,2

D. Singmaster, Hamiltonian circuits on the n-dimensional octahedron. J. Combinatorial Theory Ser. B 19 (1975), no. 1, 1-4.

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

See A003436 for labeled case.

Sequence in context: A030824 A030956 A143883 this_sequence A094475 A093034 A125174

Adjacent sequences: A003434 A003435 A003436 this_sequence A003438 A003439 A003440

nonn,nice,more

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