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 A214275 #9 Jan 03 2019 13:15:33 %S A214275 0,2,1,8,12,23,56,100,191,370,703,1280,2409,4437,8076,14821,26895, %T A214275 48760,88102,158831,285490,512395,917768,1640448,2928758,5220037, %U A214275 9291968,16519618,29335963,52038382,92218708,163272053,288813272,510469514,901536574,1591035005 %N A214275 Number of compositions of n where the difference between largest and smallest parts equals 6 and adjacent parts are unequal. %H A214275 Alois P. Heinz, <a href="/A214275/b214275.txt">Table of n, a(n) for n = 7..2000</a> %e A214275 a(8) = 2: [7,1], [1,7]. %e A214275 a(9) = 1: [1,7,1]. %e A214275 a(10) = 8: [8,2], [7,2,1], [7,1,2], [2,8], [2,7,1], [2,1,7], [1,7,2], [1,2,7]. %e A214275 a(11) = 12: [7,3,1], [7,1,3], [7,1,2,1], [3,7,1], [3,1,7], [2,1,7,1], [1,7,3], [1,7,2,1], [1,7,1,2], [1,3,7], [1,2,7,1], [1,2,1,7]. %Y A214275 Column k=6 of A214269. %K A214275 nonn %O A214275 7,2 %A A214275 _Alois P. Heinz_, Jul 09 2012