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 A216082 #6 Jul 22 2025 23:29:46 %S A216082 2,34,2440,322768,87852160,33093252880,20358402201792, %T A216082 15604440074084672,17423570614012565376,22946861101272125055616, %U A216082 41082882676098706722895360,83889915459846520832774898688,222247072052822589353800809064448 %N A216082 Number of horizontal and antidiagonal neighbor colorings of the odd squares of an nX6 array with new integer colors introduced in row major order. %C A216082 Column 6 of A216084 %H A216082 R. H. Hardin, <a href="/A216082/b216082.txt">Table of n, a(n) for n = 1..26</a> %e A216082 Some solutions for n=4 %e A216082 ..x..0..x..1..x..0....x..0..x..1..x..2....x..0..x..1..x..2....x..0..x..1..x..2 %e A216082 ..1..x..2..x..3..x....1..x..3..x..0..x....2..x..3..x..0..x....1..x..3..x..4..x %e A216082 ..x..3..x..4..x..5....x..1..x..4..x..1....x..0..x..4..x..5....x..5..x..3..x..6 %e A216082 ..1..x..3..x..1..x....4..x..3..x..5..x....3..x..0..x..6..x....3..x..4..x..3..x %K A216082 nonn %O A216082 1,1 %A A216082 _R. H. Hardin_ Sep 01 2012