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A308549
Number of connected graceful graphs on n vertices.
0
1, 1, 2, 6, 18, 106, 819, 10969
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OFFSET
1,3
LINKS
Table of n, a(n) for n=1..8.
Eric Weisstein's World of Mathematics,
Connected Graph
Eric Weisstein's World of Mathematics,
Graceful Graph
Eric Weisstein's World of Mathematics,
Vertex Count
EXAMPLE
1 node: K_1
2 nodes: P_2
3 nodes: P_3, C_3
4 nodes: K_1,3 (claw), K_4-e, P_4, paw graph, C_4, K_4
5 nodes: K_2,3, K_1,1,3, K_1,1,1,2, P_5, S_5, W_5 (and 12 more)
CROSSREFS
Sequence in context:
A162064
A162056
A347727
*
A212653
A323104
A208456
Adjacent sequences:
A308546
A308547
A308548
*
A308550
A308551
A308552
KEYWORD
nonn
,
more
AUTHOR
Eric W. Weisstein
, Jun 06 2019
EXTENSIONS
a(8) from
Eric W. Weisstein
, Aug 16 2019
STATUS
approved
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Last modified April 24 18:15 EDT 2024. Contains 371962 sequences. (Running on oeis4.)