A248991 Number of length 4+4 0..n arrays with every five consecutive terms having two times the sum of some three elements equal to three times the sum of the remaining two

2, 53, 204, 585, 2494, 8873, 20128, 41419, 70770, 133223, 222176, 361717, 538634, 788117, 1143690, 1636069, 2229208, 2986485, 3852114, 5061161, 6453778, 8167835, 10095656, 12387261, 15118434, 18394433, 21989412, 26180385, 30730830, 36337853

Offset

1,1

Comments

Row 4 of A248987

Links

R. H. Hardin, Table of n, a(n) for n = 1..122

Example

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

Crossrefs

Sequence in context: A248988 A248989 A248990 * A248992 A248993 A248994

Adjacent sequences: A248988 A248989 A248990 * A248992 A248993 A248994

Keyword

nonn

Author

R. H. Hardin, Oct 18 2014

Status

approved