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 A207316 #7 Jul 22 2025 20:17:57 %S A207316 1791,3207681,3908531208,4606553380932,5287481507599689, %T A207316 6040603302358685420,6886304943923084187412,7846460408825171428954937, %U A207316 8938860707121704653295995157,10182853721047511421514027307629 %N A207316 Number of nX7 0..2 arrays avoiding the pattern z-2 z-1 z in any row, column or nw-to-se diagonal. %C A207316 Column 7 of A207317 %H A207316 R. H. Hardin, <a href="/A207316/b207316.txt">Table of n, a(n) for n = 1..205</a> %e A207316 Some solutions for n=4 %e A207316 ..1..1..1..0..0..1..0....1..2..1..0..1..0..1....1..1..0..1..1..1..1 %e A207316 ..2..0..0..0..2..0..2....2..1..0..1..0..1..0....1..0..0..0..1..0..1 %e A207316 ..2..0..1..0..0..0..2....1..1..1..1..0..0..2....0..2..1..0..2..2..1 %e A207316 ..2..1..0..0..0..2..0....1..2..1..2..0..1..0....0..2..0..0..1..0..0 %K A207316 nonn %O A207316 1,1 %A A207316 _R. H. Hardin_ Feb 16 2012