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 A268018 #5 Mar 15 2023 11:02:41 %S A268018 622,386884,240641848,119453097281,54331933243657,22512810387947289, %T A268018 8694139636843767211,3161840103618790632192 %N A268018 Number of n X 6 0..2 arrays with every repeated value in every row and column greater than or equal to the previous repeated value. %C A268018 Column 6 of A268019. %e A268018 Some solutions for n=1 %e A268018 ..0..0..2..0..0..1....2..1..1..2..2..0....0..1..1..0..1..0....2..2..0..2..0..1 %Y A268018 Cf. A268019. %K A268018 nonn %O A268018 1,1 %A A268018 _R. H. Hardin_, Jan 24 2016