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A187047 Number of 3-step one or two space at a time bishop's tours on an n X n board summed over all starting positions 0
0, 0, 28, 136, 360, 696, 1144, 1704, 2376, 3160, 4056, 5064, 6184, 7416, 8760, 10216, 11784, 13464, 15256, 17160, 19176, 21304, 23544, 25896, 28360, 30936, 33624, 36424, 39336, 42360, 45496, 48744, 52104, 55576, 59160 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,3
COMMENTS
Row 3 of A187046
LINKS
FORMULA
Empirical: a(n) = 56*n^2 - 280*n + 360 for n>3
EXAMPLE
Some solutions for 4X4
..0..0..0..0....0..0..1..0....3..0..1..0....0..0..0..0....0..3..0..0..
..0..0..1..0....0..0..0..0....0..2..0..0....0..0..1..0....0..0..0..0..
..0..2..0..0....2..0..0..0....0..0..0..0....0..3..0..0....0..0..0..2..
..3..0..0..0....0..3..0..0....0..0..0..0....2..0..0..0....0..0..1..0..
CROSSREFS
Sequence in context: A124956 A014705 A126415 * A201095 A239205 A050973
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 02 2011
STATUS
approved

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Last modified March 28 07:48 EDT 2024. Contains 371235 sequences. (Running on oeis4.)