A030447 Number of n-celled polyknights with bilateral symmetry.

1, 0, 4, 2, 30, 32, 274, 403, 2694, 4604, 27365, 50777, 282343

Offset: 1

Author

David W. Wilson

Keywords

• nonn
• more

Comments

A polyknight is a variant of a polyomino in which two tiles a knight's move apart are considered adjacent. A polyknight need not be connected in the sense of a polyomino.

Crossrefs

Cf. A030445, A030444, A030446, A030448.

Extensions

Corrected and extended by Joseph Myers, May 21 2004

a(12)-a(13) from John Mason, Jan 13 2023