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 A202635 #6 Jun 18 2022 19:16:09 %S A202635 324,443100,464590190,459796683544,443471777729100 %N A202635 Number of n X 5 0..3 arrays with adjacent row and column sums unequal. %C A202635 Column 5 of A202636. %e A202635 Some solutions for n=2 %e A202635 ..0..2..0..1..0....0..2..3..1..1....2..3..0..0..0....0..0..0..1..1 %e A202635 ..2..3..1..1..1....0..0..2..1..3....0..1..2..0..3....0..2..1..3..1 %Y A202635 Cf. A202636. %K A202635 nonn %O A202635 1,1 %A A202635 _R. H. Hardin_, Dec 21 2011