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 A265933 #6 Dec 19 2015 09:52:49 %S A265933 3125,851496,1671744,4044156,8821464,22093736,53801792,150157540, %T A265933 449755384,1236102500,3412322472,9360675328,28319517672,77705043076, %U A265933 219811992824,603529357560,1803987081984,4979509778764,14264973899296 %N A265933 Number of 5Xn 0..4 arrays with the absolute differences of each element with its with horizontal and antidiagonal neighbors unique. %C A265933 Row 5 of A265928. %H A265933 R. H. Hardin, <a href="/A265933/b265933.txt">Table of n, a(n) for n = 1..210</a> %e A265933 Some solutions for n=1 %e A265933 ..1....3....3....3....4....3....0....2....0....2....0....1....3....3....2....1 %e A265933 ..1....2....2....2....1....1....0....2....1....3....2....3....0....2....2....4 %e A265933 ..0....1....4....1....3....1....0....0....3....2....3....2....4....1....1....1 %e A265933 ..3....1....2....4....4....2....2....2....0....3....2....2....0....4....1....1 %e A265933 ..0....3....1....2....3....0....0....3....0....2....3....4....4....4....3....2 %Y A265933 Cf. A265928. %K A265933 nonn %O A265933 1,1 %A A265933 _R. H. Hardin_, Dec 18 2015