cp's OEIS Frontend

A248997 Number of length n+4 0..4 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 A248997 #6 Jul 23 2025 11:49:08
%S A248997 2540,10360,42308,172888,706704,2888944,11810564,48286456,197422012,
%T A248997 807188768,3300330556,13494048552,55173290154,225588339824,
%U A248997 922369809354,3771323457556,15419939994758,63048058448056,257786893864722
%N A248997 Number of length n+4 0..4 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 A248997 Column 4 of A249001
%H A248997 R. H. Hardin, <a href="/A248997/b248997.txt">Table of n, a(n) for n = 1..210</a>
%e A248997 Some solutions for n=4
%e A248997 ..0....1....2....0....0....1....1....0....2....0....1....2....2....0....2....2
%e A248997 ..4....0....2....2....0....3....4....0....3....4....3....3....3....1....4....4
%e A248997 ..2....1....1....0....0....2....0....1....1....0....4....3....0....0....0....0
%e A248997 ..4....3....2....0....3....4....3....4....4....2....0....0....0....0....4....4
%e A248997 ..3....1....0....4....0....4....3....4....3....2....4....1....4....0....3....3
%e A248997 ..0....4....3....1....4....0....3....4....3....0....4....4....0....1....3....4
%e A248997 ..4....2....2....1....4....1....4....0....2....3....3....0....1....1....2....0
%e A248997 ..3....1....4....1....1....4....3....0....0....4....2....0....0....0....1....0
%K A248997 nonn
%O A248997 1,1
%A A248997 _R. H. Hardin_, Oct 18 2014