cp's OEIS Frontend

A249211 Number of length n+6 0..7 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 A249211 #6 Jul 23 2025 11:54:47
%S A249211 1826748,12777540,89437990,626273302,4386401650,30726981418,
%T A249211 215266489016,1508222615012,10567758194606,74046470379458,
%U A249211 518835076829444,3635440862473348,25473405391334868,178491926778647038
%N A249211 Number of length n+6 0..7 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 A249211 Column 7 of A249212
%H A249211 R. H. Hardin, <a href="/A249211/b249211.txt">Table of n, a(n) for n = 1..210</a>
%e A249211 Some solutions for n=1
%e A249211 ..0....4....0....4....4....4....4....4....4....4....4....4....4....0....0....0
%e A249211 ..6....0....0....4....4....4....0....0....4....0....2....0....4....4....6....4
%e A249211 ..4....2....0....6....0....2....0....2....0....0....4....0....2....6....0....2
%e A249211 ..0....4....3....6....6....6....7....1....0....6....7....3....6....2....6....4
%e A249211 ..1....6....0....7....7....6....3....1....4....6....2....4....5....0....4....3
%e A249211 ..6....3....1....7....2....3....4....0....4....2....2....7....0....3....7....2
%e A249211 ..3....7....2....5....1....4....6....0....6....2....6....5....5....1....2....3
%K A249211 nonn
%O A249211 1,1
%A A249211 _R. H. Hardin_, Oct 23 2014