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 A184127 #7 Oct 30 2022 15:47:24 %S A184127 120,142376,581588614,2895890669208,12323643023399737, %T A184127 42630936592613426327,122233352821430587249163, %U A184127 298254428253388683225868035,633084498761485396427699934865 %N A184127 Number of n X 7 0..3 arrays with rows and columns in nondecreasing order. %C A184127 Column 7 of A184129. %H A184127 R. H. Hardin, <a href="/A184127/b184127.txt">Table of n, a(n) for n = 1..19</a> %e A184127 Some solutions for 3 X 7 %e A184127 ..0..0..0..0..0..0..0....0..0..0..0..0..0..1....0..0..0..0..2..2..2 %e A184127 ..0..0..0..0..1..2..3....0..0..0..1..2..3..3....0..0..0..2..0..1..3 %e A184127 ..0..0..0..0..3..2..3....0..0..2..0..2..2..3....0..0..2..0..1..3..2 %Y A184127 Cf. A184129. %K A184127 nonn %O A184127 1,1 %A A184127 _R. H. Hardin_, Jan 09 2011