A387797 Number of fundamentally different graceful labelings of the n-dipyramidal graph.

4, 1, 7, 0, 22, 127, 176, 0, 5051, 43485

Offset

3,1

Links

Table of n, a(n) for n=3..12.

Eric Weisstein's World of Mathematics, Dipyramidal Graph.

Eric Weisstein's World of Mathematics, Graceful Labeling.

Formula

a(n) = 0 for n = 2 (mod 4).

Crossrefs

Sequence in context: A291056 A248831 A227729 * A096966 A140703 A346533

Adjacent sequences: A387794 A387795 A387796 * A387798 A387799 A387800

Keyword

nonn,more

Author

Eric W. Weisstein, Sep 08 2025

Extensions

a(11)-a(12) from Eric W. Weisstein, Oct 23 2025

Status

approved