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%I #5 Aug 25 2012 05:56:20
%S 1,1,1,8,125,2988,146205,6812794,673507749,48337803306
%N Number of permutations of 0..floor((7*n-1)/2) on even squares of an 7*n array such that each row, column, diagonal and (downwards) antidiagonal of even squares is increasing
%C Row 7 of A215788
%e Some solutions for n=4
%e ..0..x..1..x....0..x..1..x....0..x..1..x....0..x..1..x....0..x..1..x
%e ..x..2..x..4....x..2..x..3....x..2..x..3....x..2..x..4....x..2..x..4
%e ..3..x..5..x....4..x..5..x....4..x..5..x....3..x..5..x....3..x..5..x
%e ..x..6..x..7....x..6..x..7....x..6..x..7....x..6..x..8....x..6..x..8
%e ..8..x..9..x....8..x..9..x....8..x..9..x....7..x..9..x....7..x..9..x
%e ..x.10..x.12....x.10..x.12....x.10..x.11....x.10..x.12....x.10..x.11
%e .11..x.13..x...11..x.13..x...12..x.13..x...11..x.13..x...12..x.13..x
%K nonn
%O 1,4
%A _R. H. Hardin_ Aug 23 2012
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