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 A250228 #5 Apr 21 2021 15:50:22 %S A250228 8,88,248,2392,10640,120412,838604,8983896,78435176,789142896, %T A250228 7558414812,74218486628 %N A250228 Number of length n+1 0..7 arrays with the sum of the cubes of adjacent differences multiplied by some arrangement of +-1 equal to zero. %C A250228 Column 7 of A250229. %e A250228 Some solutions for n=6 %e A250228 ..2....7....2....1....6....3....7....6....0....0....2....4....4....6....1....6 %e A250228 ..1....0....5....4....2....1....4....5....2....1....3....5....3....4....1....5 %e A250228 ..2....7....5....3....4....4....3....6....5....2....0....6....0....5....4....6 %e A250228 ..5....6....0....5....7....7....7....2....5....6....3....6....1....0....1....4 %e A250228 ..2....7....5....3....5....4....4....1....5....1....1....6....4....5....6....0 %e A250228 ..1....4....2....6....1....2....2....5....3....5....2....0....6....7....1....3 %e A250228 ..2....7....2....5....4....5....7....4....6....6....6....6....4....6....1....6 %Y A250228 Cf. A250229. %K A250228 nonn %O A250228 1,1 %A A250228 _R. H. Hardin_, Nov 14 2014