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 A183714 #7 Oct 06 2015 21:58:32 %S A183714 29,174,950,5362,30113,169560,954496,5374440,30261345,170394226, %T A183714 959449106,5402445266,30419982145,171288302164,964487232600, %U A183714 5430818438104,30579761182213,172188006484798,969553341271046 %N A183714 1/20 of the number of (n+1) X 5 0..4 arrays with every 2 X 2 subblock strictly increasing clockwise or counterclockwise with one decrease. %C A183714 Column 4 of A183719. %H A183714 R. H. Hardin, <a href="/A183714/b183714.txt">Table of n, a(n) for n = 1..200</a> %F A183714 Empirical: a(n) = 6*a(n-1) + 5*a(n-2) - 42*a(n-3) - 2*a(n-4) + 84*a(n-5) - 20*a(n-6) - 46*a(n-7) + 19*a(n-8) + 2*a(n-9) - a(n-10). %e A183714 Some solutions for 3 X 5: %e A183714 ..2..1..2..0..1....4..3..0..3..4....3..4..3..4..2....0..3..4..3..4 %e A183714 ..3..0..3..4..3....0..2..1..2..1....2..1..2..0..1....1..2..0..1..0 %e A183714 ..2..1..2..0..2....4..3..4..3..4....4..0..3..4..2....0..3..4..2..3 %e A183714 ... %e A183714 ...L..R..L..R.......L..R..L..R.......R..L..R..L.......L..R..L..R... %e A183714 ...R..L..R..L.......R..L..R..L.......L..R..L..R.......R..L..R..L... %K A183714 nonn %O A183714 1,1 %A A183714 _R. H. Hardin_, Jan 06 2011