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Number of `homogenized' N-free graphs with n nodes.
0

%I #15 Feb 03 2016 10:20:24

%S 1,2,4,14,44,164,614

%N Number of `homogenized' N-free graphs with n nodes.

%H P. J. Cameron, <a href="http://www.cs.uwaterloo.ca/journals/JIS/VOL3/groups.html">Sequences realized by oligomorphic permutation groups</a>, J. Integ. Seqs. Vol. 3 (2000), #00.1.5.

%H Jacinta Covington, <a href="http://plms.oxfordjournals.org/content/s3-58/1/1.extract">A universal structure for N-free graphs</a>, Proc. London Math. Soc. (3) 58 (1989), no. 1, 1--16. MR0969544 (89m:03028).

%K nonn,more

%O 1,2

%A _Peter J. Cameron_