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 A249980 #6 Jun 22 2022 11:50:30 %S A249980 14,120,1178,11524,123154,1290856,14027522,152155572,1672105528, %T A249980 18444783546,204618309890,2278761969748,25463763359360, %U A249980 285391177688962,3206446229163896,36105694885521924,407337937707100144 %N A249980 Number of length n+1 0..2*6 arrays with the sum of the absolute values of adjacent differences equal to n*6. %C A249980 Column 6 of A249982. %H A249980 R. H. Hardin, <a href="/A249980/b249980.txt">Table of n, a(n) for n = 1..210</a> %e A249980 Some solutions for n=5 %e A249980 ..4....1....1....2....9...11....4....0...11....3....3....8....0....6...10....9 %e A249980 ..2....5....0...11....5....0....2....2....1....6....3....6....9...12....8....5 %e A249980 .11...10....4....8...11....3....6...12....3....1....0....1....1....5...12....0 %e A249980 ..2...12...11....3....1....9....9....2...11...12...10...12....5....5....3....1 %e A249980 ..8....1....2...11....2....1....0....6....8....6....0....3....2...12...11...11 %e A249980 ..4....9...11....6...11....3...12....2....1....1....7....6....8....2....4....1 %Y A249980 Cf. A249982. %K A249980 nonn %O A249980 1,1 %A A249980 _R. H. Hardin_, Nov 10 2014