A337792 Total number of graceful labelings of the n-sun graph.

0, 3264, 95300, 790056, 13398336

Offset

3,2

Comments

a(n) = 0 for n = 9, 11, 17, 19. - Eric W. Weisstein, Sep 15 2025

Links

Table of n, a(n) for n=3..7.

Eric Weisstein's World of Mathematics, Graceful Labeling

Eric Weisstein's World of Mathematics, Sun Graph

Formula

a(n) = 4*n*A387807(n). - Eric W. Weisstein, Sep 12 2025

Crossrefs

Cf. A387807 (fundamentally different graceful labelings).

Sequence in context: A254485 A253857 A358870 * A251277 A328148 A286008

Adjacent sequences: A337789 A337790 A337791 * A337793 A337794 A337795

Keyword

nonn,more

Author

Eric W. Weisstein, Sep 22 2020

Extensions

a(6)-a(7) from Eric W. Weisstein, Sep 12 2025

Status

approved