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A249236 Number of length 3+5 0..n arrays with no six consecutive terms having two times the sum of any two elements equal to the sum of the remaining four. 1

%I #6 Mar 15 2023 15:23:56

%S 92,1944,21648,128436,556024,1974784,5967084,15714420,38247620,

%T 85101320,176828220,348467560,652542984,1168383332,2021263648,

%U 3377139576,5476158948,8658723556,13363266788,20175405532,29898470296,43507494332

%N Number of length 3+5 0..n arrays with no six consecutive terms having two times the sum of any two elements equal to the sum of the remaining four.

%C Row 3 of A249233.

%H R. H. Hardin, <a href="/A249236/b249236.txt">Table of n, a(n) for n = 1..31</a>

%e Some solutions for n=4

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

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

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

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

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

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

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

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

%Y Cf. A249233.

%K nonn

%O 1,1

%A _R. H. Hardin_, Oct 23 2014

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Last modified April 23 06:04 EDT 2024. Contains 371906 sequences. (Running on oeis4.)