cp's OEIS Frontend

A249000 Number of length n+4 0..7 arrays with no five consecutive terms having two times the sum of any three elements equal to three times the sum of the remaining two.

%I A249000 #6 Jul 23 2025 11:49:28
%S A249000 27740,189660,1298968,8902860,61034658,418454994,2869206494,
%T A249000 19673497892,134897701458,924972633722,6342399495490,43489021952576,
%U A249000 298198855766202,2044713089447888,14020347915273238,96135813057541116,659191600029773658
%N A249000 Number of length n+4 0..7 arrays with no five consecutive terms having two times the sum of any three elements equal to three times the sum of the remaining two.
%C A249000 Column 7 of A249001
%H A249000 R. H. Hardin, <a href="/A249000/b249000.txt">Table of n, a(n) for n = 1..210</a>
%e A249000 Some solutions for n=2
%e A249000 ..4....4....1....1....6....4....6....0....4....0....4....0....6....6....6....4
%e A249000 ..5....1....4....4....4....6....1....0....1....2....3....7....0....6....0....3
%e A249000 ..4....2....2....4....5....1....7....7....1....1....6....7....6....6....7....3
%e A249000 ..0....3....6....5....3....0....0....7....0....6....5....3....1....5....5....6
%e A249000 ..5....6....4....3....4....7....3....1....3....0....3....0....6....1....3....2
%e A249000 ..4....7....0....0....5....7....3....2....6....0....4....2....3....4....6....3
%K A249000 nonn
%O A249000 1,1
%A A249000 _R. H. Hardin_, Oct 18 2014