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 A207314 #7 Jul 22 2025 20:17:42 %S A207314 216,46656,7791488,1274682671,205235353935,32960886054362, %T A207314 5287481507599689,847996342709895834,135988221568912041664, %U A207314 21807179762496937194845,3496992901399897131806933 %N A207314 Number of nX5 0..2 arrays avoiding the pattern z-2 z-1 z in any row, column or nw-to-se diagonal. %C A207314 Column 5 of A207317 %H A207314 R. H. Hardin, <a href="/A207314/b207314.txt">Table of n, a(n) for n = 1..210</a> %e A207314 Some solutions for n=4 %e A207314 ..0..2..0..1..0....0..1..0..2..2....1..2..2..1..2....2..1..0..2..1 %e A207314 ..0..1..0..0..2....2..0..1..0..0....0..1..1..2..1....2..2..1..1..0 %e A207314 ..1..1..0..0..0....1..1..0..1..0....1..0..1..0..0....1..1..0..0..0 %e A207314 ..1..2..0..2..1....1..1..2..0..2....1..1..2..0..2....0..0..2..0..0 %K A207314 nonn %O A207314 1,1 %A A207314 _R. H. Hardin_ Feb 16 2012