1,9
Table of n, a(n) for n=1..18.
Gunnar Brinkmann, Jan Goedgebeur, Jonas Hagglund and Klas Markstrom, Generation and properties of snarks, arXiv:1206.6690, 2012.
Sequence in context: A029696 A118887 A057383 * A169772 A193542 A193545
Adjacent sequences: A218878 A218879 A218880 * A218882 A218883 A218884
nonn
N. J. A. Sloane, Nov 26 2012
approved