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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.

A223823 Number of nX6 0..3 arrays with every row and column least squares fitting to a zero slope straight line, with a single point array taken as having zero slope.

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%I A223823 #5 Jul 23 2025 04:34:19
%S A223823 172,172,29584,45000,16748672,32376064,34078942048,73306891648,
%T A223823 142350488320080
%N A223823 Number of nX6 0..3 arrays with every row and column least squares fitting to a zero slope straight line, with a single point array taken as having zero slope.
%C A223823 Column 6 of A223824
%e A223823 Some solutions for n=4
%e A223823 ..1..0..3..3..0..1....1..0..3..2..2..0....2..2..3..1..1..3....2..0..1..0..2..1
%e A223823 ..3..3..0..0..3..3....1..3..1..2..1..2....3..2..3..3..2..3....2..1..3..3..1..2
%e A223823 ..3..0..3..3..0..3....1..3..1..2..1..2....3..2..3..3..2..3....2..1..0..0..1..2
%e A223823 ..1..1..2..2..1..1....1..0..3..2..2..0....2..2..3..1..1..3....2..0..2..1..2..1
%K A223823 nonn
%O A223823 1,1
%A A223823 _R. H. Hardin_ Mar 27 2013

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