A247531 - OEIS

%I #4 Sep 18 2014 14:02:09

%S 553,1033,2009,3997,8051,16683,34695,72269,150677,318575,671847,

%T 1413661,2970293,6314241,13372035,28225763,59454011,126633283,

%U 268599173,567619549,1196758327,2551010159,5414437825,11447235523,24144688307

%N Number of length n+3 0..6 arrays with some disjoint pairs in every consecutive four terms having the same sum

%C Column 6 of A247533

%H R. H. Hardin, <a href="/A247531/b247531.txt">Table of n, a(n) for n = 1..210</a>

%H R. H. Hardin, <a href="/A247531/a247531.txt">Empirical recurrence of order 82</a>

%F Empirical recurrence of order 82 (see link above)

%e Some solutions for n=6

%e ..6....4....4....3....4....1....4....4....2....2....6....4....0....5....6....6

%e ..4....6....5....3....3....2....6....3....2....0....5....3....3....1....0....1

%e ..5....1....6....4....3....1....5....6....3....3....4....3....2....4....4....4

%e ..3....3....5....4....2....2....5....1....1....5....5....4....1....2....2....3

%e ..2....4....6....3....4....3....4....4....4....2....4....4....2....3....6....0

%e ..4....6....5....5....5....0....4....3....2....6....5....3....3....5....4....1

%e ..3....5....4....4....3....1....3....2....5....1....4....3....2....6....4....2

%e ..3....5....3....4....4....4....3....5....3....5....3....2....1....2....2....3

%e ..2....4....4....3....2....3....2....4....4....0....2....2....4....3....2....2

%K nonn

%O 1,1

%A _R. H. Hardin_, Sep 18 2014