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 A206395 #6 Jul 22 2025 19:26:50 %S A206395 51,8404,96632,1343560,18574298,268956972,3889732730,56960076094, %T A206395 835640037768,12318524591500 %N A206395 Number of nX7 0..5 arrays with no element equal to another within a city block distance of two, and new values 0..5 introduced in row major order. %C A206395 Column 7 of A206396 %e A206395 Some solutions for n=4 %e A206395 ..0..1..2..0..1..2..3....0..1..2..3..4..0..1....0..1..2..3..0..1..2 %e A206395 ..2..3..4..5..3..4..5....2..3..5..0..1..2..4....2..3..4..1..5..3..4 %e A206395 ..4..5..1..2..0..1..2....5..4..1..2..5..3..0....4..5..0..2..4..0..5 %e A206395 ..0..2..3..4..5..3..4....0..2..3..4..0..1..5....0..1..3..5..1..2..3 %K A206395 nonn %O A206395 1,1 %A A206395 _R. H. Hardin_ Feb 07 2012