cp's OEIS Frontend

A222857 Number of nX3 0..1 arrays with every row and column least squares fitting to a nonnegative slope straight line, with a single point array taken as having zero slope.

%I A222857 #6 Jul 24 2025 19:41:57
%S A222857 6,18,108,410,2460,11160,70818,346610,2213136,11587248,73844100,
%T A222857 399763695,2535415632,14043080412,88488807432,497957337496,
%U A222857 3117629380302,17742484266750,110507820665700,634061126810250,3931544430607680
%N A222857 Number of nX3 0..1 arrays with every row and column least squares fitting to a nonnegative slope straight line, with a single point array taken as having zero slope.
%C A222857 Column 3 of A222862
%H A222857 R. H. Hardin, <a href="/A222857/b222857.txt">Table of n, a(n) for n = 1..37</a>
%e A222857 Some solutions for n=3
%e A222857 ..0..0..1....1..1..1....1..0..1....0..0..0....0..1..0....0..0..1....0..1..0
%e A222857 ..1..0..1....0..1..1....1..0..1....1..0..1....0..1..1....0..0..0....1..0..1
%e A222857 ..0..1..1....1..1..1....1..1..1....0..0..0....0..1..0....1..0..1....0..1..0
%K A222857 nonn
%O A222857 1,1
%A A222857 _R. H. Hardin_ Mar 07 2013