

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


1



58, 464, 2668, 10360, 32398, 82348, 189660, 387900, 744378, 1335780, 2289960, 3737824, 5914730, 9025016, 13447116, 19506256, 27749742, 38646260, 53006324, 71470164, 95143346, 124907012, 162219976, 208226592, 264893594, 333635648
(list;
graph;
refs;
listen;
history;
text;
internal format)



OFFSET

1,1


COMMENTS



LINKS



EXAMPLE

Some solutions for n=6
..6....6....0....6....3....2....0....6....5....1....0....5....1....6....1....2
..1....1....2....4....6....5....0....0....5....3....5....0....0....6....3....3
..6....2....5....3....0....2....2....3....6....6....6....0....2....2....5....4
..0....0....3....4....2....1....2....1....1....5....2....2....0....4....4....4
..3....2....4....5....6....2....2....6....6....2....3....4....0....5....1....1
..6....6....3....1....4....2....6....6....3....6....2....3....0....5....0....1


CROSSREFS



KEYWORD

nonn


AUTHOR



STATUS

approved



