A187031 - OEIS

%I #6 Apr 04 2016 16:14:04

%S 0,0,15760,263000,1251720,3443028,7080688,12213336,18821144,26872340,

%T 36353568

%N Number of 6-step one or two collinear space at a time queen's tours on an n X n board summed over all starting positions

%C Row 6 of A187027

%e Some solutions for 4X4

%e ..6..5..0..0....0..6..5..0....0..4..2..0....0..2..0..1....6..4..3..0

%e ..0..0..4..0....0..4..3..0....0..3..5..6....0..0..3..4....5..2..0..0

%e ..0..0..3..1....0..2..0..0....0..0..1..0....6..0..5..0....1..0..0..0

%e ..0..0..2..0....1..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0

%K nonn

%O 1,3

%A _R. H. Hardin_ Mar 02 2011