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 A239558 #4 Mar 30 2014 09:00:50
%S A239558 1,1,1,2,4,8,16,32,63,124,245,485,957,1887,3732,7375,14571,28802,
%T A239558 56920,112488,222325,439404,868428,1716358,3392208,6704360,13250484,
%U A239558 26188250,51758453,102295355,202176490,399581560,789732792,1560827535,3084818913,6096834745
%N A239558 Number of compositions of n such that the first part is 1 and the second differences of the parts are in {-8,...,8}.
%Y A239558 Column k=8 of A239550.
%K A239558 nonn
%O A239558 0,4
%A A239558 _Alois P. Heinz_, Mar 21 2014