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A334351
Total number of graceful labelings of the n-centipede graph.
1
2, 4, 16, 120, 928, 8232, 106616, 1710288, 32609624, 738615864, 19773964576
(list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
Table of n, a(n) for n=1..11.
Eric Weisstein's World of Mathematics, Centipede Graph
Eric Weisstein's World of Mathematics, Graceful Labeling
Wikipedia, Graceful labeling
FORMULA
a(n) = 4*A387794(n) for n >= 2. - Eric W. Weisstein, Sep 12 2025
CROSSREFS
Cf. A387794 (fundamentally different labelings).
Sequence in context: A110365 A047892 A275911 * A009200 A144526 A179532
Adjacent sequences: A334348 A334349 A334350 * A334352 A334353 A334354
KEYWORD
nonn,more
AUTHOR
Eric W. Weisstein, Apr 24 2020
EXTENSIONS
a(7) from Pontus von Brömssen, Aug 06 2020
a(8)-a(9) from Eric W. Weisstein, Sep 08 2025
a(10) from Eric W. Weisstein, Sep 12 2025
a(11) from Eric W. Weisstein, Sep 16 2025
STATUS
approved

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Last modified May 21 19:33 EDT 2026. Contains 395806 sequences.
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