%N Number of simple connected graphs with n nodes that are non-integral and have no subgraph isomorphic to diamond graph.
%H Travis Hoppe and Anna Petrone, <a href="https://github.com/thoppe/Encyclopedia-of-Finite-Graphs">Encyclopedia of Finite Graphs</a>
%Y Cf. A242790 (diamond-free graphs), A241842 (non-integral graphs).
%A _Travis Hoppe_ and _Anna Petrone_, Jun 06 2014