A369821 Number of (undirected) Eulerian cycles in the n-Dorogovtsev-Goltsev-Mendes graph.

0, 1, 16, 10146816, 24578010504157244424192000000

Offset: 0

Author

Eric W. Weisstein, Feb 02 2024

Keywords

• nonn

Comments

Using the convention that DGM(0) = P_2.

Term a(5) has 101 decimal digits and a(6) has 331 decimal digits. - Andrew Howroyd, Jun 09 2025

Links

• Andrew Howroyd, Table of n, a(n) for n = 0..6
• Eric Weisstein's World of Mathematics, Dorogovtsev-Goltsev-Mendes Graph.
• Eric Weisstein's World of Mathematics, Eulerian Cycle.

Crossrefs

Cf. A368190.

Extensions

a(4) onwards from Andrew Howroyd, Jun 09 2025