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 #4 Dec 17 2013 20:25:53
%S 15230,273318,5389600,117016814,2644508910,61446631860,1445209360978,
%T 34277771102530,815537967438972,19458666839438514,464512763396314566,
%U 11102011449736037176,265289173951286586038,6343430991806988527594
%N Number of (n+1)X(4+1) 0..4 arrays with every 2X2 subblock having the sum of the absolute values of the edge differences equal to 8 and no adjacent elements equal
%C Column 4 of A233928
%H R. H. Hardin, <a href="/A233924/b233924.txt">Table of n, a(n) for n = 1..210</a>
%e Some solutions for n=1
%e ..1..0..2..0..2....4..2..0..2..1....4..2..0..1..0....4..3..0..2..3
%e ..4..2..0..2..0....2..4..2..0..3....2..4..1..4..1....1..4..2..4..1
%K nonn
%O 1,1
%A _R. H. Hardin_, Dec 17 2013