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 A217455 #8 Jul 22 2025 23:40:03 %S A217455 77,4205,271863,14031423,816124375,45755747495,2588934295383, %T A217455 146317423917255,8268318911401803,467338335126312183, %U A217455 26413045308192125181,1492823071083582045841,84372932564349811785651 %N A217455 Number of nX6 arrays of the minimum value of corresponding elements and their horizontal and vertical neighbors in a random 0..2 nX6 array. %C A217455 Column 6 of A217457 %H A217455 R. H. Hardin, <a href="/A217455/b217455.txt">Table of n, a(n) for n = 1..15</a> %e A217455 Some solutions for n=3 %e A217455 ..0..0..2..0..1..1....0..0..2..2..2..2....0..0..1..2..1..0....0..1..1..1..1..0 %e A217455 ..0..1..0..0..0..1....0..2..2..0..0..1....0..0..2..1..0..0....0..0..2..1..0..0 %e A217455 ..2..0..0..0..1..2....2..2..0..0..0..0....0..0..0..0..0..0....0..0..2..1..0..0 %K A217455 nonn %O A217455 1,1 %A A217455 _R. H. Hardin_ Oct 03 2012