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 A211356 #4 Apr 18 2012 15:50:04 %S A211356 1,0,1,1,0,1,1,1,0,1,3,1,2,0,1,3,4,2,2,0,1,12,11,12,4,3,0,1,24,41,33, %T A211356 20,5,3,0,1,103,162,151,77,39,7,4,0,1,387,715,648,386,154,56,10,4,0,1, %U A211356 1819,3425,3255,1944,876,278,88,12,5,0,1 %N A211356 Triangle read by rows: T(n,k) is the number of partitions up to rotation of an n-set that contain k singleton blocks. %H A211356 Tilman Piesk, <a href="/A211356/b211356.txt">Table of n, a(n) for n = 0..77</a> %K A211356 nonn,tabl %O A211356 0,11 %A A211356 _Tilman Piesk_, Apr 12 2012