login
Number of nonisomorphic nonbipartite (0,2)-graphs with valency n.
0

%I #11 Feb 21 2024 15:55:18

%S 0,0,0,1,1,4,11,56,198

%N Number of nonisomorphic nonbipartite (0,2)-graphs with valency n.

%H Andries E. Brouwer, and Patric R. J. Östergård, <a href="http://dx.doi.org/10.1016/j.disc.2008.07.037">Classification of the (0, 2)-graphs of valency 8</a>, Discrete Mathematics 309.3 (2009): 532-547.

%F a(n) = A202592(n) - A282741(n). - _Andrew Howroyd_, Feb 21 2024

%Y Cf. A202592, A282741.

%K nonn,more

%O 0,6

%A _N. J. A. Sloane_, Mar 04 2017