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%I #4 Dec 18 2015 18:18:10
%S 0,0,34,3967,373930,12302859,203628239,2132961900,16137269619
%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 element at a city block distance of two, and containing the value n(n+1)/2-5
%C Column 4 of A212036
%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......1.1......1.2......0.1
%e ..3.3.4....1.3.3....3.3.4....3.4.1....1.3.3....2.3.4....1.3.4....2.1.3
%e ..5.6.6.2..4.5.5.4..0.1.5.5..5.5.2.3..4.0.5.4..2.3.5.0..0.5.4.0..4.0.0.5
%K nonn
%O 1,3
%A _R. H. Hardin_ Apr 27 2012
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