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 A262196 #8 Sep 13 2017 02:14:26 %S A262196 0,1,2,6,12,25,46,88,152,267,452,764,1260,2049,3314,5272,8354,13077, %T A262196 20366,31302,48048,72849,110244,165354,247194,366703,541802,796066, %U A262196 1164264,1695201,2457904,3549244,5104908,7313739,10437170,14848936,21041422,29732907 %N A262196 Number of compositions of n such that the maximal distance between two identical parts equals three. %e A262196 a(4) = 1: 1111. %e A262196 a(5) = 2: 1121, 1211. %e A262196 a(6) = 6: 1131, 1221, 1311, 2112, 11112, 21111. %e A262196 a(7) = 12: 1141, 1231, 1321, 1411, 2122, 2212, 11113, 11212, 12112, 21121, 21211, 31111. %e A262196 a(8) = 25: 1151, 1241, 1331, 1421, 1511, 2132, 2222, 2312, 3113, 11114, 11213, 11312, 12113, 12122, 12212, 13112, 21131, 21221, 21311, 22121, 31121, 31211, 41111, 111122, 221111. %Y A262196 Column k=3 of A262191. %K A262196 nonn %O A262196 3,3 %A A262196 _Alois P. Heinz_, Sep 14 2015