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 A201234 #6 Mar 07 2022 14:19:56 %S A201234 46,2697,62133,508368,77620598,4442977704,112920979339,1076710643794 %N A201234 Number of n X 7 0..3 arrays with every row and column running average nondecreasing rightwards and downwards, and the number of instances of each value within one of each other. %C A201234 Column 7 of A201235. %e A201234 Some solutions for n=3 %e A201234 ..0..0..0..2..1..1..2....0..0..0..1..2..2..1....0..0..0..0..1..2..1 %e A201234 ..0..1..1..2..3..3..2....0..0..3..1..2..3..3....0..1..1..3..3..2..2 %e A201234 ..0..1..3..3..3..2..2....1..1..2..2..3..3..3....0..1..3..3..3..2..2 %Y A201234 Cf. A201235. %K A201234 nonn %O A201234 1,1 %A A201234 _R. H. Hardin_, Nov 28 2011