cp's OEIS Frontend

A249214 Number of length 2+6 0..n arrays with no seven consecutive terms having five times the sum of any two elements equal to two times the sum of the remaining five.

%I A249214 #6 Jul 23 2025 11:55:07
%S A249214 250,4586,51200,294568,1267754,4353482,12777540,32910110,77097762,
%T A249214 165865332,335432460,639208042,1165096450,2034488164,3435664024,
%U A249214 5608125804,8919812138,13812228622,20946412056,31084523896,45360185886
%N A249214 Number of length 2+6 0..n arrays with no seven consecutive terms having five times the sum of any two elements equal to two times the sum of the remaining five.
%C A249214 Row 2 of A249212
%H A249214 R. H. Hardin, <a href="/A249214/b249214.txt">Table of n, a(n) for n = 1..26</a>
%e A249214 Some solutions for n=3
%e A249214 ..2....2....2....2....3....2....0....1....3....2....2....0....2....0....1....2
%e A249214 ..1....0....3....0....0....2....3....3....3....1....0....1....3....0....3....2
%e A249214 ..2....3....2....0....1....0....1....1....0....0....1....2....1....0....3....1
%e A249214 ..0....1....2....2....0....2....3....3....0....0....3....3....2....2....2....1
%e A249214 ..3....2....3....1....1....0....2....0....0....0....1....0....1....3....0....2
%e A249214 ..0....0....0....2....0....0....2....2....0....0....3....1....0....2....2....2
%e A249214 ..0....2....0....3....3....2....2....0....1....1....1....2....1....2....0....0
%e A249214 ..0....0....0....3....3....0....3....2....0....1....2....2....0....2....1....3
%K A249214 nonn
%O A249214 1,1
%A A249214 _R. H. Hardin_, Oct 23 2014