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%I #4 Dec 18 2015 18:18:09
%S 0,0,10,802,27963,394117,3243531,18826250,85484512,323341343,
%T 1061434357,3110902786,8308425940
%N Number of lower triangular n X n arrays colored with integers 0 upwards introduced in row major order, with no element equal to any horizontal, vertical, diagonal or antidiagonal neighbor, and containing the value n(n+1)/2-4
%C Column 3 of A211916
%e Some solutions for n=4
%e ..0........0........0........0........0........0........0........0
%e ..1.2......1.2......1.2......1.2......1.2......1.2......1.2......1.2
%e ..0.3.4....3.4.5....3.0.4....3.4.0....3.4.5....0.3.4....0.3.4....3.4.5
%e ..5.6.0.5..0.1.6.7..4.5.6.0..5.6.7.6..2.1.6.3..5.2.6.7..4.5.6.1..1.6.2.1
%K nonn
%O 1,3
%A _R. H. Hardin_ Apr 25 2012
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