526502domain: NAppears in sequences(Presumed) solution to Waring's problem: g(n) = 2^n + floor((3/2)^n) - 2.at n=18A002804Number of unlabeled simple graphs on n vertices with no induced subgraphs isomorphic to a P5 or complement of a P5, where P5 = path on 5 vertices.at n=10A385697