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A222974 Number of 6 X (n+1) 0..1 arrays with every row least squares fitting to a positive-slope straight line and every column least squares fitting to a zero- or positive-slope straight line, with a single point array taken as having zero slope. 0

%I #9 Dec 04 2021 08:36:12

%S 1,36,7344,264384,21852384,677339136,41252032201,1279444594428,

%T 63987904860942,2004349575346776

%N Number of 6 X (n+1) 0..1 arrays with every row least squares fitting to a positive-slope straight line and every column least squares fitting to a zero- or positive-slope straight line, with a single point array taken as having zero slope.

%e Some solutions for n=3:

%e 0 0 1 1 0 0 1 1 0 1 1 1 0 0 1 1 0 0 1 0

%e 0 0 0 1 1 0 1 1 0 0 1 0 0 0 0 1 0 0 0 1

%e 0 1 1 1 1 0 1 1 1 0 1 1 0 1 0 1 0 0 1 0

%e 0 0 1 1 0 0 1 1 1 0 1 1 0 0 1 1 0 1 1 1

%e 0 1 0 1 0 1 1 1 0 1 1 1 0 1 1 1 0 0 1 0

%e 0 1 1 1 1 0 1 1 0 1 1 1 0 0 1 1 1 0 1 1

%Y Row 6 of A222969.

%K nonn,more

%O 1,2

%A _R. H. Hardin_, Mar 10 2013

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Last modified April 19 06:44 EDT 2024. Contains 371782 sequences. (Running on oeis4.)