A245849 - OEIS

%I #4 Aug 04 2014 07:28:59

%S 1,1,2,2,5,5,15,17,78,102,569,919,6143,11171,86081,175169,1500038,

%T 3364000,31525459,76939147,780320735,2050031495,22262632431,

%U 62282672077,716105605234,2108542401240,25363729963607,77679827847931

%N Number of length n 0..6 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 Column 6 of A245851

%H R. H. Hardin, <a href="/A245849/b245849.txt">Table of n, a(n) for n = 1..64</a>

%e Some solutions for n=12

%e ..0....0....0....0....0....0....0....0....0....0....0....0....0....0....0....0

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

%e ..2....0....1....0....0....1....1....2....0....2....1....2....2....1....1....0

%e ..2....2....1....1....2....0....2....1....0....3....1....1....1....0....1....2

%e ..3....3....2....1....2....2....3....3....0....2....0....1....0....2....1....0

%e ..1....2....2....1....2....0....1....2....0....1....0....3....2....0....0....1

%e ..2....4....0....0....2....1....1....2....2....1....1....2....1....0....2....2

%e ..1....3....2....2....2....0....1....3....0....2....2....2....2....1....2....2

%e ..3....2....0....1....2....1....0....1....0....3....1....2....0....2....0....1

%e ..2....1....2....1....0....1....2....2....1....2....0....1....2....0....1....1

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

%e ..0....0....0....0....0....0....0....0....0....0....0....0....0....0....0....0

%K nonn

%O 1,3

%A _R. H. Hardin_, Aug 04 2014