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 A321844 #3 Nov 19 2018 18:04:28 %S A321844 40320,181440,1058400,4823280,23296680,103757940,478790130,2149170345, %T A321844 9894491985,45282147720,211500002835,991730832582,4733756233145, %U A321844 22787184211575,111475945291060,551049677448403,2764601557859302,14023910986706605,72114359742608090 %N A321844 Number of words w of length n such that each letter of the octonary alphabet is used at least once and for every prefix z of w we have #(z,a_i) = 0 or #(z,a_i) >= #(z,a_j) for all j>i and #(z,a_i) counts the occurrences of the i-th letter in z. %Y A321844 Column k=8 of A257783. %K A321844 nonn %O A321844 8,1 %A A321844 _Alois P. Heinz_, Nov 19 2018