A249216 Number of length 4+6 0..n arrays with no seven consecutive terms having five times the sum of any two elements equal to two times the sum of the remaining five.

984, 30876, 658448, 5630090, 34695508, 161678612, 626273302, 2049702248, 5979230646, 15612736530, 37868231726, 85016420930, 180991372636, 364878560018, 706567478056, 1308415445162

Offset

1,1

Comments

Row 4 of A249212

Links

Table of n, a(n) for n=1..16.

Example

Some solutions for n=2
..0....2....1....2....2....1....0....0....0....0....2....0....1....2....2....1
..2....0....0....0....1....2....2....2....1....0....0....2....0....0....0....0
..1....2....0....0....2....2....2....2....1....2....2....2....0....1....2....2
..0....2....1....2....2....0....1....1....0....1....2....2....2....2....1....1
..0....2....0....1....1....1....1....1....0....0....2....2....0....2....1....2
..0....1....0....2....2....2....2....2....1....0....2....2....1....0....2....2
..1....2....2....1....1....2....0....2....0....1....1....1....0....1....0....1
..2....1....1....2....2....1....0....1....2....1....0....1....0....2....2....0
..1....2....0....0....1....1....0....0....1....1....2....1....2....2....1....1
..1....2....1....2....2....1....0....1....0....0....1....1....1....0....1....1

Crossrefs

Sequence in context: A268590 A249201 A249323 * A289063 A289061 A294183

Adjacent sequences: A249213 A249214 A249215 * A249217 A249218 A249219

Keyword

nonn

Author

R. H. Hardin, Oct 23 2014

Status

approved