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 A267025 #5 Aug 12 2016 06:54:00 %S A267025 120,15,37,537,5493,69265,912057,13122646,193577805,2965487933, %T A267025 46310466234 %N A267025 Number of 6Xn arrays containing n copies of 0..6-1 with every element equal to or 1 greater than any northeast or northwest neighbors modulo 6 and the upper left element equal to 0. %C A267025 Row 6 of A267019. %e A267025 Some solutions for n=4 %e A267025 ..0..2..5..2....0..3..0..2....0..4..1..3....0..3..0..2....0..2..5..2 %e A267025 ..3..0..3..0....4..0..3..1....5..1..4..2....3..0..3..0....3..0..3..5 %e A267025 ..0..4..1..3....1..4..1..4....2..5..2..5....1..4..1..4....1..3..0..3 %e A267025 ..4..1..4..1....5..2..4..1....0..3..5..2....5..1..4..1....4..1..4..0 %e A267025 ..1..4..2..5....2..5..2..5....3..0..3..0....2..5..2..4....2..4..1..5 %e A267025 ..5..2..5..3....0..3..5..3....1..4..1..4....5..3..5..2....4..2..5..1 %Y A267025 Cf. A267019. %K A267025 nonn %O A267025 1,1 %A A267025 _R. H. Hardin_, Jan 09 2016