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A187027 T(n,k)=Number of n-step one or two collinear space at a time queen's tours on a kXk 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 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

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

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..98

EXAMPLE

Some n=4 solutions for 4X4

..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: A277896 A195056 A186861 * A187850 A186965 A330386

Adjacent sequences:  A187024 A187025 A187026 * A187028 A187029 A187030

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin Mar 02 2011

STATUS

approved

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Last modified August 17 17:59 EDT 2022. Contains 356189 sequences. (Running on oeis4.)