cp's OEIS Frontend

A249003 Number of length 2+4 0..n 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 A249003 #6 Jul 23 2025 11:49:42
%S A249003 58,464,2668,10360,32398,82348,189660,387900,744378,1335780,2289960,
%T A249003 3737824,5914730,9025016,13447116,19506256,27749742,38646260,53006324,
%U A249003 71470164,95143346,124907012,162219976,208226592,264893594,333635648
%N A249003 Number of length 2+4 0..n 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 A249003 Row 2 of A249001
%H A249003 R. H. Hardin, <a href="/A249003/b249003.txt">Table of n, a(n) for n = 1..95</a>
%e A249003 Some solutions for n=6
%e A249003 ..6....6....0....6....3....2....0....6....5....1....0....5....1....6....1....2
%e A249003 ..1....1....2....4....6....5....0....0....5....3....5....0....0....6....3....3
%e A249003 ..6....2....5....3....0....2....2....3....6....6....6....0....2....2....5....4
%e A249003 ..0....0....3....4....2....1....2....1....1....5....2....2....0....4....4....4
%e A249003 ..3....2....4....5....6....2....2....6....6....2....3....4....0....5....1....1
%e A249003 ..6....6....3....1....4....2....6....6....3....6....2....3....0....5....0....1
%K A249003 nonn
%O A249003 1,1
%A A249003 _R. H. Hardin_, Oct 18 2014