A023646 - OEIS

%I #13 Sep 18 2018 13:44:03

%S 1,2,3,3,7,3,7,7,11,3,20,5,10,15

%N Number of vertex-transitive graphs of valency 3 with 2n nodes.

%D CRC Handbook of Combinatorial Designs, 1996, p. 649.

%Y Even-indexed terms of column k=3 of A319367.

%K nonn,more

%O 2,2

%A _N. J. A. Sloane_

%E a(14)-a(15) added by _Andrew Howroyd_, Sep 18 2018