This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A208382 #8 Jul 02 2018 09:01:35 %S A208382 12,144,180,900,3200,10660,40740,148240,526900,1931300,7015680, %T A208382 25336420,92086020,334206800,1211147700,4394975940,15944933760, %U A208382 57827661860,209781161700,761003136400,2760390765620,10013327220580,36323344673280 %N A208382 Number of 6 X n 0..1 arrays avoiding 0 0 0 and 1 1 1 horizontally and 0 0 1 and 1 0 1 vertically. %C A208382 Row 6 of A208379. %H A208382 R. H. Hardin, <a href="/A208382/b208382.txt">Table of n, a(n) for n = 1..210</a> %F A208382 Empirical: a(n) = a(n-1) + 4*a(n-2) + 17*a(n-3) + 11*a(n-4) - 4*a(n-5) + 16*a(n-6) for n>8. %F A208382 Empirical g.f.: 4*x*(3 + 33*x - 3*x^2 - 15*x^3 - 250*x^4 - 184*x^5 + 96*x^6 - 256*x^7) / (1 - x - 4*x^2 - 17*x^3 - 11*x^4 + 4*x^5 - 16*x^6). - _Colin Barker_, Jul 02 2018 %e A208382 Some solutions for n=4: %e A208382 ..0..1..0..1....0..1..1..0....1..1..0..1....1..0..0..1....1..0..0..1 %e A208382 ..1..0..1..1....1..0..1..1....0..0..1..1....1..0..1..1....0..1..0..1 %e A208382 ..0..0..1..0....1..0..0..1....0..0..1..0....0..0..1..1....0..1..0..0 %e A208382 ..0..0..1..0....1..0..0..1....0..0..1..0....0..0..1..0....0..1..0..0 %e A208382 ..0..0..1..0....1..0..0..1....0..0..1..0....0..0..1..0....0..1..0..0 %e A208382 ..0..0..1..0....1..0..0..1....0..0..1..0....0..0..1..0....0..1..0..0 %Y A208382 Cf. A208379. %K A208382 nonn %O A208382 1,1 %A A208382 _R. H. Hardin_, Feb 25 2012