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 A224126 #5 Jul 23 2025 05:00:27 %S A224126 35,6627,1070499,145901795,17292618579,1830213565657,176495247198733, %T A224126 15745932467829042,1315113237261820410,103796589850715007818 %N A224126 Number of 4Xn 0..3 arrays with row sums nondecreasing and column sums unimodal. %C A224126 Row 4 of A224123 %e A224126 Some solutions for n=3 %e A224126 ..0..2..0....0..0..2....0..0..0....0..1..0....2..0..2....2..0..0....2..2..1 %e A224126 ..2..0..0....2..0..1....2..0..3....0..1..0....2..1..1....0..1..1....0..2..3 %e A224126 ..2..2..0....0..3..0....0..3..2....0..0..3....0..2..3....0..1..1....2..3..2 %e A224126 ..3..0..1....2..1..1....2..3..0....2..2..1....2..3..1....2..3..2....2..3..3 %K A224126 nonn %O A224126 1,1 %A A224126 _R. H. Hardin_ Mar 31 2013