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 A239555 #4 Mar 24 2014 20:20:00
%S A239555 1,1,1,2,4,8,15,29,56,106,201,388,743,1421,2727,5233,10034,19248,
%T A239555 36925,70836,135885,260684,500101,959400,1840522,3530904,6773757,
%U A239555 12994934,24929791,47825908,91750372,176016138,337673592,647801215,1242757517,2384136115
%N A239555 Number of compositions of n such that the first part is 1 and the second differences of the parts are in {-5,...,5}.
%H A239555 Alois P. Heinz, <a href="/A239555/b239555.txt">Table of n, a(n) for n = 0..1000</a>
%Y A239555 Column k=5 of A239550.
%K A239555 nonn
%O A239555 0,4
%A A239555 _Alois P. Heinz_, Mar 21 2014