A007268 - OEIS

%I M1467 #15 Dec 05 2017 10:13:57

%S 1,0,1,2,5,14,47,186,894,5249,38181,348568

%N Number of partition graphs on n vertices.

%D N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

%H D. W. DeTemple et al., <a href="https://doi.org/10.1016/0012-365X(93)90520-4">Recent examples in the theory of partition graphs</a>, Discrete Math., 113 (1993), 255-258.

%K nonn,more,hard

%O 1,4

%A _Simon Plouffe_

%E a(11)-a(12) from _Sean A. Irvine_, Dec 04 2017