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 #5 Mar 31 2012 12:36:57
%S 2,4,4,2,8,12,6,32,56,32,160,270,150,840,1512,882,4704,8232,4704,
%T 26880,48960,28800,158400,282150,163350,943800,1730300,1022450,
%U 5725720,10306296,6012006,34978944,64393056,38158848,216233472,391923168
%N Number of nX1 0..1 arrays with the counts of all possible adjacent horizontal and vertical pair sum values being within one of each other
%C Column 1 of A203638
%H R. H. Hardin, <a href="/A203631/b203631.txt">Table of n, a(n) for n = 1..625</a>
%e All solutions for n=5
%e ..0....1....0....0....1....1....1....0
%e ..0....1....0....0....1....0....1....1
%e ..1....0....1....0....1....0....0....1
%e ..1....0....1....1....0....1....0....0
%e ..1....1....0....1....0....1....0....0
%K nonn
%O 1,1
%A _R. H. Hardin_ Jan 04 2012