cp's OEIS Frontend

A249470 Number of length 4+4 0..n arrays with no five consecutive terms having four times any element equal to the sum of the remaining four.

%I A249470 #6 Jul 23 2025 12:01:49
%S A249470 216,2802,34832,206428,980718,3512232,10671554,28408106,68141702,
%T A249470 149985134,308128976,596635030,1099154100,1939520516,3298783802,
%U A249470 5428583306,8678985766,13520275360,20580791722,30686017266,44896600642
%N A249470 Number of length 4+4 0..n arrays with no five consecutive terms having four times any element equal to the sum of the remaining four.
%C A249470 Row 4 of A249466
%H A249470 R. H. Hardin, <a href="/A249470/b249470.txt">Table of n, a(n) for n = 1..69</a>
%e A249470 Some solutions for n=3
%e A249470 ..2....0....1....3....2....0....2....2....1....3....1....0....1....3....3....2
%e A249470 ..1....0....3....1....3....2....1....0....0....2....1....3....1....1....1....0
%e A249470 ..1....0....3....0....3....3....3....1....1....2....3....1....3....3....2....1
%e A249470 ..0....1....3....0....3....1....0....1....1....1....3....0....2....3....1....2
%e A249470 ..2....2....2....3....2....2....3....2....0....3....3....3....0....0....2....2
%e A249470 ..3....0....3....0....3....0....0....2....0....3....2....1....0....0....0....2
%e A249470 ..0....3....1....0....1....3....3....3....0....0....3....1....0....0....1....2
%e A249470 ..1....0....0....1....0....1....1....3....1....0....2....2....2....0....0....1
%K A249470 nonn
%O A249470 1,1
%A A249470 _R. H. Hardin_, Oct 29 2014