1,12
Table of n, a(n) for n=1..15.
Keith M. Briggs, Combinatorial Graph Theory
See A116079 for further information.
Sequence in context: A042015 A042012 A128404 * A273477 A202656 A340487
Adjacent sequences: A126738 A126739 A126740 * A126742 A126743 A126744
nonn
N. J. A. Sloane
a(15) from Michael Sollami, Feb 04 2012
approved