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 A275292 #8 Aug 02 2016 08:06:39 %S A275292 1,5,95,575,7175,49091,513206,3800358,36298007,282835456,2571177913, %T A275292 20702222482,183079272792,1505743012484,13114463722858, %U A275292 109381638489849,944974537003694,7956650229728706,68468581589476475,580345660548809882,4986413617279183229 %N A275292 Number of set partitions of [n] with symmetric block size list of length nine. %H A275292 Alois P. Heinz, <a href="/A275292/b275292.txt">Table of n, a(n) for n = 9..500</a> %H A275292 Wikipedia, <a href="https://en.wikipedia.org/wiki/Partition_of_a_set">Partition of a set</a> %F A275292 a(n) ~ 9^n / (71680*Pi^2*n^2). - _Vaclav Kotesovec_, Aug 02 2016 %e A275292 a(10) = 5: 1|2|3|4|56|7|8|9|(10), 1|2|3|4|57|6|8|9|(10), 1|2|3|4|58|6|7|9|(10), 1|2|3|4|59|6|7|8|(10), 1|2|3|4|5(10)|6|7|8|9. %Y A275292 Column k=9 of A275281. %K A275292 nonn %O A275292 9,2 %A A275292 _Alois P. Heinz_, Jul 22 2016