A393340 Number of fundamentally different graceful labelings of the n-necklace graph.

1, 17, 788, 107291, 39116098

Offset

1,2

Links

Table of n, a(n) for n=1..5.

Eric Weisstein's World of Mathematics, Graceful Labeling.

Eric Weisstein's World of Mathematics, Necklace Graph.

Crossrefs

Sequence in context: A012144 A265190 A308490 * A374946 A249459 A191963

Adjacent sequences: A393337 A393338 A393339 * A393341 A393342 A393343

Keyword

nonn,more

Author

Eric W. Weisstein, Feb 12 2026

Extensions

a(5) from Bert Dobbelaere, Feb 17 2026

Status

approved