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A308557
Number of connected ungraceful graphs on n nodes.
1
0, 0, 0, 0, 3, 6, 34, 148
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OFFSET
1,5
LINKS
Table of n, a(n) for n=1..8.
Eric Weisstein's World of Mathematics,
Graceful Graph
CROSSREFS
Cf.
A308556
(not necessarily connected ungraceful graphs).
Sequence in context:
A186750
A203715
A249875
*
A134748
A068904
A309774
Adjacent sequences:
A308554
A308555
A308556
*
A308558
A308559
A308560
KEYWORD
nonn
,
more
AUTHOR
Eric W. Weisstein
, Jun 07 2019
EXTENSIONS
a(8) from
Eric W. Weisstein
, Aug 16 2019
STATUS
approved
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Last modified April 25 04:42 EDT 2024. Contains 371964 sequences. (Running on oeis4.)