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 A187862 Number of 7-step one space for components leftwards or up, two space for components rightwards or down asymmetric quasi-queen's tours (antidiagonal moves become knight moves) on an n X n board summed over all starting positions 1
 0, 0, 1206, 26584, 180750, 568870, 1314428, 2456614, 4062007, 6094090, 8589253, 11504726, 14853686, 18625870, 22821278, 27439910, 32481766, 37946846, 43835150, 50146678, 56881430, 64039406, 71620606, 79625030, 88052678, 96903550 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,3 COMMENTS Row 7 of A187857 LINKS R. H. Hardin, Table of n, a(n) for n = 1..50 FORMULA Empirical: a(n) = 211612*n^2 - 1941340*n + 4328678 for n>11 EXAMPLE Some solutions for 4X4 ..0..3..5..4....0..0..4..0....0..0..0..0....0..3..2..0....0..1..0..0 ..1..7..2..0....7..6..0..3....0..4..0..7....1..0..0..6....4..0..7..0 ..0..0..6..0....0..5..0..2....0..3..2..6....0..4..0..5....3..2..6..0 ..0..0..0..0....0..1..0..0....0..5..0..1....0..0..7..0....0..0..5..0 CROSSREFS Sequence in context: A190031 A254694 A279983 * A186864 A338963 A135239 Adjacent sequences: A187859 A187860 A187861 * A187863 A187864 A187865 KEYWORD nonn AUTHOR R. H. Hardin Mar 14 2011 STATUS approved

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Last modified June 23 01:40 EDT 2024. Contains 373629 sequences. (Running on oeis4.)