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 A250225 #5 Jul 23 2025 12:15:17 %S A250225 5,33,89,473,1785,9437,47953,264473,1440243,8079297,45802695, %T A250225 261075913,1482800313,8373051893,46955800797,260855334021, %U A250225 1431746806913,7751019623085,41366541154615 %N A250225 Number of length n+1 0..4 arrays with the sum of the cubes of adjacent differences multiplied by some arrangement of +-1 equal to zero. %C A250225 Column 4 of A250229 %e A250225 Some solutions for n=6 %e A250225 ..2....1....2....1....0....3....2....2....2....0....1....4....2....4....4....3 %e A250225 ..4....0....4....3....0....4....1....3....2....2....1....0....3....4....1....1 %e A250225 ..2....0....4....2....0....4....1....0....0....1....4....1....0....3....0....0 %e A250225 ..3....1....3....0....3....4....0....3....1....0....3....0....1....3....3....1 %e A250225 ..2....0....3....4....0....2....4....1....0....1....0....0....0....0....3....2 %e A250225 ..3....1....2....0....4....3....4....3....2....2....1....4....3....1....3....0 %e A250225 ..4....1....4....1....0....1....0....4....2....4....1....4....2....4....4....1 %K A250225 nonn %O A250225 1,1 %A A250225 _R. H. Hardin_, Nov 14 2014