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 A232596 #7 Jul 23 2025 07:31:51 %S A232596 32,23034,2322,1718514,306022,144506106,41969054,12273587770, %T A232596 4884387186,1043763774120,539685676660,88770099413126,56392403717222, %U A232596 7550561153273170,5696222151995370,642331696103563914,560920693194450480 %N A232596 Number of (7+1)X(n+1) 0..2 arrays with every element next to itself plus and minus one within the range 0..2 horizontally or antidiagonally, with no adjacent elements equal. %C A232596 Row 7 of A232589 %H A232596 R. H. Hardin, <a href="/A232596/b232596.txt">Table of n, a(n) for n = 1..210</a> %e A232596 Some solutions for n=4 %e A232596 ..0..1..0..1..0....0..1..0..1..0....0..1..0..1..0....0..1..0..1..0 %e A232596 ..2..1..2..1..2....2..1..2..1..2....2..1..2..1..2....2..1..2..1..2 %e A232596 ..0..1..0..1..2....0..1..2..1..0....2..1..0..1..2....0..1..0..1..2 %e A232596 ..2..1..0..1..0....2..1..0..1..2....0..1..2..1..2....2..1..0..1..2 %e A232596 ..0..1..2..1..0....2..1..2..1..0....0..1..0..1..2....2..1..2..1..0 %e A232596 ..0..1..0..1..2....2..1..0..1..0....2..1..0..1..0....2..1..2..1..0 %e A232596 ..0..1..2..1..0....2..1..2..1..0....0..1..2..1..0....0..1..2..1..2 %e A232596 ..2..1..0..1..2....2..1..0..1..2....0..1..2..1..0....2..1..0..1..0 %K A232596 nonn %O A232596 1,1 %A A232596 _R. H. Hardin_, Nov 26 2013