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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.

A263372 Number of (n+1)X(7+1) 0..2 arrays with each row and column divisible by 7, read as a base-3 number with top and left being the most significant digits.

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%I A263372 #3 Oct 16 2015 07:33:30
%S A263372 37,1359,1260442,943196037,883978450474,787253224440475
%N A263372 Number of (n+1)X(7+1) 0..2 arrays with each row and column divisible by 7, read as a base-3 number with top and left being the most significant digits.
%C A263372 Column 7 of A263373.
%e A263372 Some solutions for n=2
%e A263372 ..0..0..1..0..0..1..0..0....2..2..2..0..2..2..2..2....2..2..0..0..1..0..0..0
%e A263372 ..0..2..1..0..2..1..0..0....1..1..1..0..1..1..1..1....1..1..0..2..1..2..2..0
%e A263372 ..0..1..2..0..1..2..0..0....0..0..0..0..0..0..0..0....0..0..0..1..2..1..1..0
%Y A263372 Cf. A263373.
%K A263372 nonn
%O A263372 1,1
%A A263372 _R. H. Hardin_, Oct 16 2015

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