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 Jun 15 2015 12:28:36
%S 1645856,1724976,2292662,2864828,3415506,4910670,6869922,9782192,
%T 14339074,21420810,33384430,51877348,82387928,134565758,222363040,
%U 376499514,645917492,1129355382,2014646192,3644105654,6705942142
%N Number of (n+3)X(4+3) 0..1 arrays with no 4x4 subblock diagonal sum not equal the antidiagonal sum
%C Column 4 of A258957
%H R. H. Hardin, <a href="/A258953/b258953.txt">Table of n, a(n) for n = 1..52</a>
%e Some solutions for n=1
%e ..0..0..0..0..1..0..1....0..0..0..0..1..1..0....0..0..0..0..0..0..0
%e ..0..0..0..0..0..1..1....1..1..0..1..0..1..1....1..0..1..0..0..0..0
%e ..1..0..0..0..0..1..0....0..0..0..1..0..1..0....0..0..0..0..0..0..0
%e ..0..0..1..0..1..1..1....1..0..0..0..1..1..0....0..1..0..1..0..0..1
%Y Cf. A258957
%K nonn
%O 1,1
%A _R. H. Hardin_, Jun 15 2015