|
Search: id:A030445
|
|
|
| A030445 |
|
Number of one-sided n-celled polyknights. |
|
+0
5
|
|
| 1, 2, 8, 68, 550, 5328, 52484, 534793, 5513338, 57494308, 604212943
(list; graph; listen)
|
|
|
OFFSET
|
1,2
|
|
|
COMMENT
|
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.
|
|
EXAMPLE
|
The two polyknights with 2 cells:
X.. ..X
..X X..
The 8 polyknights with 3 cells:
X. X.. X.. X... X.X .X. .X. X...
.. ... ..X .... ... X.. ..X ...X
.X .X. ... .X.. .X. ..X X.. .X..
.. ... .X. ...X
X. ..X
|
|
CROSSREFS
|
Cf. A030444, A030446, A030447, A030448.
Sequence in context: A132219 A023164 A053922 this_sequence A093990 A156448 A157752
Adjacent sequences: A030442 A030443 A030444 this_sequence A030446 A030447 A030448
|
|
KEYWORD
|
nonn,nice
|
|
AUTHOR
|
Dave Wilson
|
|
EXTENSIONS
|
Corrected and extended by Joseph S. Myers (jsm(AT)polyomino.org.uk), May 21, 2004
|
|
|
Search completed in 0.002 seconds
|
