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 A057565 #3 Mar 31 2012 23:01:18
%S A057565 1,2,10,144,6608
%N A057565 Number of regions of linearity for Lusztig's piecewise-linear function in type A_n.
%C A057565 Lusztig's piecewise-linear function is of interest because it appears to be related to a description of the canonical basis of the quantized enveloping algebra U^+(sl_{n+1}).
%D A057565 J. W. Cockerton, "Canonical bases and piecewise-linear combinatorics", Ph.D., Warwick, 1995
%K A057565 hard,nonn,nice
%O A057565 1,2
%A A057565 _Richard M. Green_, Oct 04 2000