VOOZH about

URL: https://oeis.org/A187027

⇱ A187027 - OEIS

login
A187027
T(n,k) is the number of n-step one or two collinear space at a time queen's tours on a k X k board summed over all starting positions.
6
1, 4, 0, 9, 12, 0, 16, 56, 24, 0, 25, 132, 296, 24, 0, 36, 240, 1008, 1344, 0, 0, 49, 380, 2232, 7056, 5120, 0, 0, 64, 552, 3936, 19568, 45152, 15760, 0, 0, 81, 756, 6120, 39348, 161256, 263000, 36816, 0, 0, 100, 992, 8784, 66360, 376248, 1251720, 1384152, 57904, 0, 0
OFFSET
1,2
LINKS
EXAMPLE
Table starts:
.1..4.....9.......16........25........36.......49........64.......81.....100
.0.12....56......132.......240.......380......552.......756......992....1260
.0.24...296.....1008......2232......3936.....6120......8784....11928...15552
.0.24..1344.....7056.....19568.....39348....66360....100380...141408..189444
.0..0..5120....45152....161256....376248...696992...1121176..1647008.2273384
.0..0.15760...263000...1251720...3443028..7080688..12213336.18821144
.0..0.36816..1384152...9151912..30203792.69641344.129718288
.0..0.57904..6516592..62903536.254189928
.0..0.45856.27116200.405255984
.0..0.....0.98268864
Some n=4 solutions for 4 X 4:
..0..0..0..0....0..0..0..0....0..0..0..0....0..4..0..0....0..0..1..0
..0..0..0..0....0..2..0..0....4..0..1..0....0..0..3..0....0..0..2..0
..3..0..4..0....0..4..0..0....0..0..2..0....1..0..0..0....0..0..3..0
..0..2..0..1....0..3..0..1....0..0..3..0....2..0..0..0....0..4..0..0
CROSSREFS
Row 2 is A104188(n-1).
Sequence in context: A195056 A378319 A186861 * A187850 A186965 A330386
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Mar 02 2011
STATUS
approved