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A333727
Total number of graceful labelings of all simple graphs on n nodes.
0
1, 2, 16, 144, 1428, 25328, 631026, 25087224
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OFFSET
1,2
LINKS
Table of n, a(n) for n=1..8.
Eric Weisstein's World of Mathematics,
Graceful Labeling
Eric Weisstein's World of Mathematics,
Simple Graph
CROSSREFS
Sequence in context:
A003768
A214767
A300412
*
A024915
A162440
A337793
Adjacent sequences:
A333724
A333725
A333726
*
A333728
A333729
A333730
KEYWORD
nonn
,
more
,
hard
AUTHOR
Eric W. Weisstein
, Apr 03 2020
EXTENSIONS
a(8) from
Eric W. Weisstein
, Jul 30 2020
STATUS
approved
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Last modified April 19 23:40 EDT 2024. Contains 371798 sequences. (Running on oeis4.)