0,3
F. Harary and E. M. Palmer, Graphical Enumeration, Academic Press, NY, 1973, p. 218.
Table of n, a(n) for n=0..6.
Sequence in context: A003088 A121231 A122527 * A049531 A031508 A202140
Adjacent sequences: A039744 A039745 A039746 * A039748 A039749 A039750
dead
approved