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Number of graphs with n nodes that are chordal but not integral.
1

%I #13 Nov 26 2015 14:31:35

%S 0,0,1,4,12,56,267,1605,11909,109525

%N Number of graphs with n nodes that are chordal but not integral.

%H Travis Hoppe and Anna Petrone, <a href="https://github.com/thoppe/Encyclopedia-of-Finite-Graphs">Encyclopedia of Finite Graphs</a>

%H T. Hoppe and A. Petrone, <a href="http://arxiv.org/abs/1408.3644">Integer sequence discovery from small graphs</a>, arXiv preprint arXiv:1408.3644, 2014

%F a(n) = A048192(n) - A243786(n).

%Y Cf. A048192 (chordal graphs), A241842 (non-integral graphs).

%K nonn,more

%O 1,4

%A _Travis Hoppe_ and _Anna Petrone_, Jun 27 2014