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A333719
Number of graceful labelings of the n-ladder graph.
1
2, 16, 128, 1416, 17936, 384544
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OFFSET
1,1
LINKS
Table of n, a(n) for n=1..6.
Eric Weisstein's World of Mathematics,
Graceful Labeling
Eric Weisstein's World of Mathematics,
Ladder Graph
CROSSREFS
Sequence in context:
A270924
A371814
A214623
*
A161737
A171451
A012459
Adjacent sequences:
A333716
A333717
A333718
*
A333720
A333721
A333722
KEYWORD
nonn
,
more
AUTHOR
Eric W. Weisstein
, Apr 03 2020
EXTENSIONS
a(6) from
Pontus von Brömssen
, Jul 25 2020
STATUS
approved
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Last modified September 2 03:47 EDT 2024. Contains 375604 sequences. (Running on oeis4.)