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A250415 Number of length n+1 0..4 arrays with the sum of the minimum of each adjacent pair multiplied by some arrangement of +-1 equal to zero 1

%I #4 Nov 22 2014 19:27:52

%S 9,65,205,1351,5982,34415,169352,904695,4547008,23448029,117953499,

%T 598260521,3002881031,15113176921,75724031785,379750748041,

%U 1900758538693,9516621521809,47607635835257,238183334181909,1191212059701364

%N Number of length n+1 0..4 arrays with the sum of the minimum of each adjacent pair multiplied by some arrangement of +-1 equal to zero

%C Column 4 of A250419

%H R. H. Hardin, <a href="/A250415/b250415.txt">Table of n, a(n) for n = 1..91</a>

%e Some solutions for n=6

%e ..0....1....1....2....1....4....0....4....3....3....4....3....0....0....1....3

%e ..4....2....2....2....1....3....1....0....2....0....4....0....4....1....1....2

%e ..4....4....2....1....3....3....2....4....2....0....4....2....0....2....3....1

%e ..2....0....1....2....1....1....3....4....3....1....1....1....2....3....1....0

%e ..3....0....0....2....4....4....3....4....2....4....2....4....0....1....1....0

%e ..3....4....0....2....1....4....2....0....3....4....1....3....4....1....3....3

%e ..1....3....1....4....1....0....4....3....2....3....3....4....0....3....1....3

%K nonn

%O 1,1

%A _R. H. Hardin_, Nov 22 2014

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Last modified March 28 05:39 EDT 2024. Contains 371235 sequences. (Running on oeis4.)