A123935 Number of (directed) Hamiltonian paths on the 4 X n knight graph.

0, 0, 16, 0, 164, 1488, 12756, 62176, 379376, 2426224, 13367704, 72972656, 402564940, 2167170608, 11412234916, 59638462576, 308861005448, 1581575598752, 8029891390392, 40482609620976, 202672272980456, 1008192626002544, 4987067296004984, 24540946112970792

Offset: 1

Author

N. J. A. Sloane, Oct 30 2006

Keywords

• nonn

Links

• Andrew Howroyd, Table of n, a(n) for n = 1..500
• Eric Weisstein's World of Mathematics, Knight Graph

Crossrefs

Cf. A079137, A306282.

Formula

a(n) = 2*A079137(n).

Extensions

Terms a(22) and beyond from Andrew Howroyd, Oct 13 2019