1,2
Computed using software at http://cs.anu.edu.au/~bdm/nauty/
Cf. A129424, A129434, A000421, A129417, A129419, A129421, A129425
Sequence in context: A174251 A130741 A003385 * A048291 A015089 A179565
Adjacent sequences: A129420 A129421 A129422 * A129424 A129425 A129426
nonn
Brendan McKay (bdm(at)cs.anu.edu.au), Apr 15 2007