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A245848 Number of length n 0..5 arrays with new values introduced in order from both ends, and least squares fitting to a straight line with slope zero, with a single point taken as having zero slope.

%I A245848 #6 Jul 23 2025 11:30:02
%S A245848 1,1,2,2,5,5,15,17,78,102,569,919,6142,11170,86043,174957,1495234,
%T A245848 3338570,31029867,74669371,740854138,1885642110,19616697093,
%U A245848 51936661281,558093960576,1517106442790,16655034027581,46067262638225
%N A245848 Number of length n 0..5 arrays with new values introduced in order from both ends, and least squares fitting to a straight line with slope zero, with a single point taken as having zero slope.
%C A245848 Column 5 of A245851
%H A245848 R. H. Hardin, <a href="/A245848/b245848.txt">Table of n, a(n) for n = 1..87</a>
%e A245848 Some solutions for n=12
%e A245848 ..0....0....0....0....0....0....0....0....0....0....0....0....0....0....0....0
%e A245848 ..0....1....1....1....1....1....0....1....1....1....0....0....1....1....1....1
%e A245848 ..1....2....1....1....2....2....1....2....0....0....1....1....1....2....1....2
%e A245848 ..2....2....2....2....0....0....1....0....0....0....2....1....2....2....2....1
%e A245848 ..1....0....2....0....3....1....1....2....2....2....1....2....0....3....0....1
%e A245848 ..1....3....2....0....3....0....0....0....1....3....3....1....1....2....3....2
%e A245848 ..2....4....2....0....3....0....2....3....1....0....1....1....1....3....1....0
%e A245848 ..0....3....3....3....3....0....2....3....2....2....2....2....1....1....0....0
%e A245848 ..2....0....0....2....0....2....0....2....0....1....0....1....0....3....1....2
%e A245848 ..0....2....2....1....2....1....1....1....0....1....1....1....2....2....2....2
%e A245848 ..1....1....1....0....1....1....0....0....1....0....1....0....1....1....1....1
%e A245848 ..0....0....0....0....0....0....0....0....0....0....0....0....0....0....0....0
%K A245848 nonn
%O A245848 1,3
%A A245848 _R. H. Hardin_, Aug 04 2014