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 A249979 #6 Jun 02 2025 10:16:34 %S A249979 12,90,728,6252,55372,508902,4598532,43752328,399919272,3872197278, %T A249979 35715136808,349291390860,3244120777620,31938382591862, %U A249979 298193263675024,2949970866347064,27653133418970008,274591500744039956 %N A249979 Number of length n+1 0..2*5 arrays with the sum of the absolute values of adjacent differences equal to n*5. %C A249979 Column 5 of A249982 %H A249979 R. H. Hardin, <a href="/A249979/b249979.txt">Table of n, a(n) for n = 1..210</a> %e A249979 Some solutions for n=5 %e A249979 ..4....7....3....8...10....8....7....4....7....8....0....4....8....5....7....9 %e A249979 ..9....3....6...10....3....5...10....3....0....3....1....7....2....2....2....3 %e A249979 ..2....7....3....2....4...10....7....1....7....9....9....3....6....9...10...10 %e A249979 ..9....9....0....8...10....3....1...10....4....2....9....0....0....3....2....1 %e A249979 ..4....0....9....1....3....9....8....3....9....5....1...10....1....6....1....2 %e A249979 ..5....6....2....3....7....5....2....9....6....1....9....5....9....0....4....0 %K A249979 nonn %O A249979 1,1 %A A249979 _R. H. Hardin_, Nov 10 2014