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%I #6 May 03 2021 13:32:57
%S 6,2798,1544783,1382332582,1169280626549
%N Number of n X 6 0..4 arrays with values 0..4 introduced in row major order and each element equal to one or two horizontal and vertical neighbors.
%C Column 6 of A198669.
%e Some solutions with all values 0 to 4 for n=3
%e ..0..0..1..1..2..2....0..0..0..1..1..2....0..0..0..1..2..2....0..0..1..2..2..2
%e ..0..0..3..3..2..4....0..1..1..3..1..2....0..3..3..1..4..1....0..1..1..3..4..4
%e ..1..1..1..3..3..4....2..2..3..3..4..4....2..2..3..1..4..1....4..4..4..3..3..4
%Y Cf. A198669.
%K nonn
%O 1,1
%A _R. H. Hardin_ Oct 28 2011
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