A206387 - OEIS

%I #4 Mar 31 2012 12:37:11

%S 15,4801,868994,164270604,30809397399

%N Number of nX6 0..6 arrays with no element equal to another within a city block distance of two, and new values 0..6 introduced in row major order

%C Column 6 of A206389

%e Some solutions for n=4

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 07 2012