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 A270769 #5 Mar 22 2016 19:02:46
%S A270769 52,307,1845,11437,73561,492112,3426532,24825947,187018111,1463322425,
%T A270769 11878759787,99919924444,869876263976,7828394233551,72744595145117,
%U A270769 697213288063149,6885160707939613,69986707107451700,731580664064312728,7857203170378852079
%N A270769 Total sum of the sizes of all blocks with minimal element 6 in all set partitions of {1,2,...,n}.
%H A270769 Alois P. Heinz, <a href="/A270769/b270769.txt">Table of n, a(n) for n = 6..575</a>
%H A270769 Wikipedia, <a href="https://en.wikipedia.org/wiki/Partition_of_a_set">Partition of a set</a>
%Y A270769 Column k=6 of A270702.
%Y A270769 A diagonal of A270701.
%K A270769 nonn
%O A270769 6,1
%A A270769 _Alois P. Heinz_, Mar 22 2016