Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).
%I #3 Dec 24 2014 15:36:50
%S 997740,33858062,990142582,31496378270,973958225703,30642385604286,
%T 956170027716012,30054930941620027,940897927085342630,
%U 29530352815343830282,926071257853310121409
%N Number of (n+2)X(5+2) 0..3 arrays with every consecutive three elements in every row and column having exactly two distinct values, and new values 0 upwards introduced in row major order
%C Column 5 of A252904
%e Some solutions for n=1
%e ..0..0..1..1..2..2..0....0..1..1..0..1..0..0....0..0..1..0..1..0..1
%e ..3..3..1..1..2..2..0....1..1..2..2..1..1..0....0..2..2..0..0..1..0
%e ..0..0..3..0..0..1..1....0..2..2..0..0..1..1....1..2..1..1..0..1..1
%K nonn
%O 1,1
%A _R. H. Hardin_, Dec 24 2014