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 A219599 #5 Jul 23 2025 00:34:23 %S A219599 21,151,1739,16117,164075,1767430,18945258,197089634,1981970463, %T A219599 19358161454,184190226523,1706892195059,15388946333957, %U A219599 134892703836856,1149449915830010,9523092771838241 %N A219599 Number of 6Xn arrays of the minimum value of corresponding elements and their horizontal or vertical neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..2 6Xn array. %C A219599 Row 6 of A219595 %e A219599 Some solutions for n=3 %e A219599 ..0..0..0....0..0..0....1..0..0....0..0..0....1..0..0....1..0..0....2..0..0 %e A219599 ..0..0..0....2..0..0....1..0..0....0..0..0....1..0..0....0..0..0....2..0..0 %e A219599 ..1..0..0....2..0..0....0..0..0....1..1..0....1..0..0....0..0..0....2..0..0 %e A219599 ..1..0..0....2..0..0....1..0..0....1..0..0....1..1..0....2..0..1....2..1..0 %e A219599 ..2..1..0....2..0..0....1..1..1....0..0..0....1..1..1....2..1..1....2..1..1 %e A219599 ..2..1..1....2..1..0....2..1..1....2..0..0....2..1..2....2..2..1....2..1..1 %K A219599 nonn %O A219599 1,1 %A A219599 _R. H. Hardin_ Nov 23 2012