2,3
Computed using software at http://cs.anu.edu.au/~bdm/nauty/
Cf. A129421, A129433, A129416, A129418, A129420, A129424, A129426
Sequence in context: A183343 A192376 A029498 * A184062 A101122 A090535
Adjacent sequences: A129419 A129420 A129421 * A129423 A129424 A129425
nonn
Brendan McKay (bdm(at)cs.anu.edu.au), Apr 15 2007