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Number of simple connected graphs with n nodes that are trees and not integral.
0

%I #10 Nov 26 2015 14:30:13

%S 0,0,1,2,2,5,10,23,47,105

%N Number of simple connected graphs with n nodes that are trees and 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

%Y Cf. A241842 (non-integral graphs), A000055 (tree graphs).

%K nonn,more

%O 1,4

%A _Travis Hoppe_ and _Anna Petrone_, Jun 03 2014