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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 September 15 18:36 EDT 2024. Contains 375954 sequences. (Running on oeis4.)