A030447 Number of n-celled polyknights with bilateral symmetry.

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

Offset

1,3

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.

Links

Table of n, a(n) for n=1..13.

Crossrefs

Cf. A030445, A030444, A030446, A030448.

Sequence in context: A291844 A353750 A093991 * A302369 A317899 A076936

Adjacent sequences: A030444 A030445 A030446 * A030448 A030449 A030450

Keyword

nonn,more

Author

David W. Wilson

Extensions

Corrected and extended by Joseph Myers, May 21 2004

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

Status

approved