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 A219425 #8 Oct 30 2014 05:03:39 %S A219425 1,200,2043,28888,372560,4775307,61543422,796901866,10332516216, %T A219425 133871792745,1733790943515,22454270113272,290832016789657, %U A219425 3766998295859184,48791165925094356,631950081288077455 %N A219425 Unchanging value maps: number of 5 X n binary arrays indicating the locations of corresponding elements unequal to no horizontal or antidiagonal neighbor in a random 0..2 5 X n array. %C A219425 Row 5 of A219421. %H A219425 R. H. Hardin, <a href="/A219425/b219425.txt">Table of n, a(n) for n = 1..28</a> %e A219425 Some solutions for n=3: %e A219425 ..0..0..0....1..0..0....1..0..1....1..1..0....0..0..0....0..0..0....0..0..0 %e A219425 ..0..1..0....0..0..1....0..0..1....0..0..1....0..1..1....0..0..1....1..0..1 %e A219425 ..0..0..1....0..0..1....0..0..0....1..0..0....1..0..0....1..0..1....1..1..0 %e A219425 ..0..0..1....1..1..0....0..0..0....1..0..0....1..0..1....0..0..1....0..0..1 %e A219425 ..0..0..1....0..0..0....1..0..1....0..0..1....0..0..0....1..0..0....1..0..0 %Y A219425 Cf. A219421. %K A219425 nonn %O A219425 1,2 %A A219425 _R. H. Hardin_, Nov 19 2012