A387888 Number of fundamentally different graceful labelings of the n-crown graph.

0, 0, 0, 27, 69, 57, 0

Offset

1,4

Links

Table of n, a(n) for n=1..7.

Eric Weisstein's World of Mathematics, Crown Graph.

Eric Weisstein's World of Mathematics, Graceful Labeling.

Formula

a(n) = A326747(n)/(4*n!). - Eric W. Weisstein, Sep 12 2025

Crossrefs

Cf. A326747 (all graceful labelings).

Sequence in context: A065008 A250134 A116353 * A224525 A219130 A116302

Adjacent sequences: A387885 A387886 A387887 * A387889 A387890 A387891

Keyword

nonn,more

Author

Eric W. Weisstein, Sep 11 2025

Status

approved