A393482 Number of Hamiltonian cycles in the n X n truncated square lattice graph.

3, 24, 378, 23736, 10582480, 7596623856, 50490941406094, 455794749654417168, 40489293988731765922722

Offset

1,1

Links

Table of n, a(n) for n=1..9.

Eric Weisstein's World of Mathematics, Hamiltonian Cycle.

Eric Weisstein's World of Mathematics, Truncated Square Lattice Graph.

Crossrefs

Main diagonal of A392422.

Sequence in context: A332975 A010791 A145169 * A193210 A065761 A374021

Adjacent sequences: A393479 A393480 A393481 * A393483 A393484 A393485

Keyword

nonn,more

Author

Eric W. Weisstein, Feb 16 2026

Extensions

a(6)-a(9) from Andrew Howroyd, Feb 17 2026

Status

approved