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 A184124 #7 Jul 22 2025 09:27:02 %S A184124 35,2861,276427,21907055,1361812470,68564445616,2895890669208, %T A184124 105444472863183,3378291908588468,96731087997530019, %U A184124 2505731171609500353,59302593647075171521,1292712426187108744457,26131939998738083235224 %N A184124 Number of nX4 0..3 arrays with rows and columns in nondecreasing order. %C A184124 Column 4 of A184129 %H A184124 R. H. Hardin, <a href="/A184124/b184124.txt">Table of n, a(n) for n = 1..200</a> %e A184124 Some solutions for 3X4 %e A184124 ..0..0..2..3....0..0..0..2....0..0..1..1....0..0..1..1....0..0..3..3 %e A184124 ..0..2..1..2....0..1..1..3....0..3..3..3....0..1..3..3....0..2..1..1 %e A184124 ..3..1..0..0....2..1..2..1....2..0..2..2....1..0..0..3....1..0..0..3 %K A184124 nonn %O A184124 1,1 %A A184124 _R. H. Hardin_ Jan 09 2011