A249228 Number of length n+5 0..3 arrays with no six consecutive terms having two times the sum of any two elements equal to the sum of the remaining four

2772, 7736, 21648, 60744, 170928, 482388, 1365524, 3889132, 11085704, 31624832, 90291712, 257986472, 737641956, 2111829480, 6047886156, 17324092484, 49634779596, 142232471640, 407642504688, 1168643504468, 3350608310100

Offset

1,1

Comments

Column 3 of A249233

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

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

Crossrefs

Sequence in context: A231709 A046332 A046380 * A154081 A362876 A099691

Adjacent sequences: A249225 A249226 A249227 * A249229 A249230 A249231

Keyword

nonn

Author

R. H. Hardin, Oct 23 2014

Status

approved