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 A262197 #9 Sep 13 2017 02:14:31 %S A262197 0,1,3,9,21,46,92,180,330,595,1039,1793,3023,5030,8248,13388,21518, %T A262197 34231,54079,84607,131603,203050,311738,474974,720666,1086125,1629815, %U A262197 2431647,3612665,5339710,7860366,11519856,16816312,24448029,35409609 %N A262197 Number of compositions of n such that the maximal distance between two identical parts equals four. %e A262197 a(5) = 1: 11111. %e A262197 a(6) = 3: 11121, 11211, 12111. %e A262197 a(7) = 9: 11131, 11221, 11311, 12121, 12211, 13111, 21112, 111112, 211111. %e A262197 a(8) = 21: 11141, 11231, 11321, 11411, 12131, 12221, 12311, 13121, 13211, 14111, 21122, 21212, 22112, 111113, 111212, 112112, 121112, 211121, 211211, 212111, 311111. %Y A262197 Column k=4 of A262191. %K A262197 nonn %O A262197 4,3 %A A262197 _Alois P. Heinz_, Sep 14 2015