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 A229319 #5 Jul 23 2025 05:40:34 %S A229319 2196,1203222,310664552,69027667944,14999158146398,3239971166331308 %N A229319 Number of nX6 0..3 arrays of the median of the corresponding element, the element to the east and the element to the south in a larger (n+1)X7 0..3 array without adjacent equal elements in the latter. %C A229319 Column 6 of A229320 %e A229319 Some solutions for n=2 %e A229319 ..0..2..1..2..0..2....0..1..0..2..0..2....0..1..0..3..1..2....0..2..0..3..1..0 %e A229319 ..2..0..3..1..2..2....3..2..2..0..2..3....1..1..2..0..2..1....2..0..3..1..1..2 %K A229319 nonn %O A229319 1,1 %A A229319 _R. H. Hardin_ Sep 19 2013