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 A200851 #8 Jul 22 2025 15:58:21 %S A200851 5,105,8535,2604826,3001883019,13079416454738 %N A200851 Number of n X n 0..4 arrays with every row and column running average nondecreasing rightwards and downwards. %C A200851 Diagonal of A200858 %e A200851 Some solutions for n=3 %e A200851 ..0..2..2....0..1..2....0..2..2....2..2..3....0..3..3....0..1..2....0..0..2 %e A200851 ..2..3..3....0..3..2....0..4..2....2..4..4....4..4..4....0..4..3....0..2..2 %e A200851 ..3..3..4....2..2..2....2..3..4....2..3..4....3..4..4....2..4..3....3..4..4 %K A200851 nonn %O A200851 1,1 %A A200851 _R. H. Hardin_ Nov 23 2011