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A007866
Number of `homogenized' N-free graphs with n nodes.
0
1, 2, 4, 14, 44, 164, 614
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OFFSET
1,2
LINKS
Table of n, a(n) for n=1..7.
P. J. Cameron,
Sequences realized by oligomorphic permutation groups
, J. Integ. Seqs. Vol. 3 (2000), #00.1.5.
Jacinta Covington,
A universal structure for N-free graphs
, Proc. London Math. Soc. (3) 58 (1989), no. 1, 1--16. MR0969544 (89m:03028).
CROSSREFS
Sequence in context:
A243323
A128750
A047152
*
A226909
A121751
A327644
Adjacent sequences:
A007863
A007864
A007865
*
A007867
A007868
A007869
KEYWORD
nonn
,
more
AUTHOR
Peter J. Cameron
STATUS
approved
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Last modified March 28 12:26 EDT 2024. Contains 371254 sequences. (Running on oeis4.)