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 A214187 #6 Jul 22 2025 23:12:22 %S A214187 1,1,4,4,18,34,11,353,1046,499,41,7434,147943,108893,10507,162,198052, %T A214187 21418431,96673866,13701111,272410,714,5731144,3375824210,76892349394, %U A214187 68272896836,1808609113,7817980,3397,172707247,537471327779 %N A214187 T(n,k)=Number of 0..6 colorings of an nx(k+1) array circular in the k+1 direction with new values 0..6 introduced in row major order. %C A214187 Table starts %C A214187 .....1........1...........4..............11..................41 %C A214187 .....4.......18.........353............7434..............198052 %C A214187 ....34.....1046......147943........21418431..........3375824210 %C A214187 ...499...108893....96673866.....76892349394......63801460335656 %C A214187 .10507.13701111.68272896836.282135060192286.1213459476427300800 %H A214187 R. H. Hardin, <a href="/A214187/b214187.txt">Table of n, a(n) for n = 1..71</a> %e A214187 Some solutions for n=4 k=1 %e A214187 ..0..1....0..1....0..1....0..1....0..1....0..1....0..1....0..1....0..1....0..1 %e A214187 ..2..3....2..3....2..3....1..2....2..3....2..0....2..0....2..3....1..2....2..0 %e A214187 ..3..4....1..0....1..4....3..1....3..0....0..3....1..2....4..0....2..0....1..2 %e A214187 ..2..5....3..2....5..3....4..3....2..1....3..2....0..1....3..2....1..2....2..1 %Y A214187 Column 1 is A198717 %K A214187 nonn,tabl %O A214187 1,3 %A A214187 _R. H. Hardin_ Jul 07 2012