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 A228673 #5 Aug 29 2013 23:29:15 %S A228673 1,0,0,0,0,0,923,3430,6004,10008,16014,24750,17153135,139520497, %T A228673 747544744,2907714483,9788905840,30236892651,2389382438831, %U A228673 33146052783575,291048293120402,2033077226586965,11881137473504364,61473838487159979,1656802388288612691 %N A228673 Number of permutations of [n] having a shortest ascending run of length 6. %H A228673 Alois P. Heinz, <a href="/A228673/b228673.txt">Table of n, a(n) for n = 6..100</a> %Y A228673 Column k=6 of A064315. %K A228673 nonn %O A228673 6,7 %A A228673 _Alois P. Heinz_, Aug 29 2013