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.
Table of n, a(n) for n=1..11.
Cf. A030445, A030444, A030446, A030447.
Sequence in context: A228542 A002561 A181547 * A093992 A294272 A231595
Adjacent sequences: A030445 A030446 A030447 * A030449 A030450 A030451
David W. Wilson
Corrected and extended by Joseph Myers, May 21, 2004